Astronomical database with 3D simulations, visualizations, computations, review, articles, and more.

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Sun & Moon Today

JD 2460768  DoY 92  WoY 14
🔼05:28
🔽18:07

TWILIGHT
04:01~19:33
Ecl Long 12.7°
in Pisces

Waxing crescent
Age 4.26 d
Phase 52.0°
Ecl Long 64.6°
in Taurus

SSE

Observable comet count is 1188

Current exoplanet count is 5862

Current longitude II of the GRS is  68°



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Impact Probablity of 2024 YR4:  Insignificant

Asteroid Size ProbabilityDate
2024 YR440—90 mInsignificant22 December 2032

Reference ESA

Please do not let this worry you. The asteroid has been detected just recently meaning that the orbital elements are not yet accurately determined, while they can alter any time due to gravitational pulls.


The risk corridor of 2024 YR4's possible impact locations runs from the Pacific Ocean to Northern South America, the Atlantic Ocean, central Africa, a corner of the Arabian peninsula, and then to northern India (Source Wikipedia).

 

 

Today Monitor

 


Planet Oppositions

Mars: January 16, 2025
Jupiter: January 10, 2026
Saturn: September 21, 2025
Uranus: November 21, 2025
Neptune: September 23, 2025

 

Greatest Elongation of Venus

Evening: January 10, 2025 at 47.2°E
Morning: June 1, 2025 at 45.9°W

 

Greatest Elongation of Mercury

Morning: December 25, 2024 at 22.0°W
Evening: March 8, 2025 at 18.2°E
Morning: April 21, 2025 at 27.4°W
Evening: July 4, 2025 at 25.9°E
Morning: August 19, 2025 at 18.6°W
Evening: October 29, 2025 at 23.9°E
Morning: December 7, 2025 at 20.7°W
Evening: Febrary 19, 2026 at 18.1°E



Comets to look out for:



Super Moons (full) 2025

Wednesday, 5 November
Friday, 5 December

 

given for 00:00 UT

In Longitude (negative is western)

DateSizeAgeAnglePhase
23 Feb 202530.61'24.48-6.502°
24 Feb 202531.06'25.48-6.683°
25 Feb 202531.54'26.48-6.463°
22 Mar 202530.16'21.97-6.602°
23 Mar 202530.54'22.97-7.220°
24 Mar 202531.00'23.97-7.497°
25 Mar 202531.50'24.97-7.380°
26 Mar 202532.03'25.97-6.841°
04 Apr 202531.86'5.546.674°
05 Apr 202531.40'6.547.159°
06 Apr 202530.97'7.547.233°
07 Apr 202530.58'8.546.935°
19 Apr 202530.14'20.54-6.609°
20 Apr 202530.49'21.54-7.247°
21 Apr 202530.91'22.54-7.602°
22 Apr 202531.38'23.54-7.618°
23 Apr 202531.89'24.54-7.248°
24 Apr 202532.39'25.54-6.459°
02 May 202532.05'4.196.908°
03 May 202531.53'5.197.524°
04 May 202531.04'6.197.652°
05 May 202530.59'7.197.335°
06 May 202530.21'8.196.642°
18 May 202530.56'20.19-6.624°
19 May 202530.92'21.19-6.950°
20 May 202531.32'22.19-7.010°
21 May 202531.75'23.19-6.758°
30 May 202532.13'2.876.436°
31 May 202531.63'3.877.137°
01 Jun 202531.12'4.877.336°
02 Jun 202530.65'5.877.064°
29 Jun 202531.11'3.566.528°
02 Oct 202530.80'10.17-6.602°
03 Oct 202531.28'11.17-6.712°
04 Oct 202531.79'12.17-6.413°
13 Oct 202532.01'21.176.426°
14 Oct 202531.60'22.177.017°
15 Oct 202531.20'23.177.219°
16 Oct 202530.83'24.177.068°
17 Oct 202530.51'25.176.617°
29 Oct 202530.28'7.48-6.622°
30 Oct 202530.70'8.48-7.213°
31 Oct 202531.18'9.48-7.461°
01 Nov 202531.71'10.48-7.298°
02 Nov 202532.24'11.48-6.672°
10 Nov 202532.23'19.487.097°
11 Nov 202531.72'20.487.804°
12 Nov 202531.23'21.488.024°
13 Nov 202530.78'22.487.808°
14 Nov 202530.39'23.487.230°
26 Nov 202530.27'5.72-6.459°
27 Nov 202530.63'6.72-7.095°
28 Nov 202531.05'7.72-7.447°
29 Nov 202531.52'8.72-7.439°
30 Nov 202532.02'9.72-7.008°
08 Dec 202532.44'17.726.680°
09 Dec 202531.91'18.727.561°
10 Dec 202531.38'19.727.916°
11 Dec 202530.87'20.727.788°
12 Dec 202530.43'21.727.247°
26 Dec 202531.06'5.93-6.615°
27 Dec 202531.43'6.93-6.624°

 

In Latitude (negative is southern)

DateSizeAgeAnglePhase
12 Jan 202531.85'12.07-6.565°
13 Jan 202531.60'13.07-6.448°
26 Jan 202530.57'26.076.621°
27 Jan 202530.96'27.076.622°
08 Feb 202531.60'9.48-6.682°
09 Feb 202531.36'10.48-6.624°
22 Feb 202530.21'23.486.703°
23 Feb 202530.61'24.486.800°
24 Feb 202531.06'25.486.559°
07 Mar 202531.74'6.97-6.762°
08 Mar 202531.39'7.97-6.766°
09 Mar 202531.05'8.97-6.404°
21 Mar 202529.85'20.976.665°
22 Mar 202530.16'21.976.852°
23 Mar 202530.54'22.976.721°
03 Apr 202532.33'4.54-6.682°
04 Apr 202531.86'5.54-6.784°
05 Apr 202531.40'6.54-6.493°
17 Apr 202529.65'18.546.506°
18 Apr 202529.86'19.546.754°
19 Apr 202530.14'20.546.698°
30 Apr 202532.98'2.19-6.438°
01 May 202532.55'3.19-6.675°
02 May 202532.05'4.19-6.485°
15 May 202529.78'17.196.605°
16 May 202529.99'18.196.587°
28 May 202532.97'0.87-6.528°
29 May 202532.60'1.87-6.460°
11 Jun 202529.82'14.876.526°
12 Jun 202530.02'15.876.530°
24 Jun 202532.85'27.87-6.457°
25 Jun 202532.68'28.87-6.502°
08 Jul 202529.84'12.566.561°
09 Jul 202530.07'13.566.600°
21 Jul 202532.45'25.56-6.493°
22 Jul 202532.38'26.56-6.624°
04 Aug 202529.76'10.206.646°
05 Aug 202529.99'11.206.748°
06 Aug 202530.28'12.206.541°
17 Aug 202532.23'23.20-6.553°
18 Aug 202532.11'24.20-6.755°
19 Aug 202531.94'25.20-6.550°
31 Aug 202529.61'7.756.661°
01 Sep 202529.78'8.756.848°
02 Sep 202530.05'9.756.733°
13 Sep 202532.46'20.75-6.508°
14 Sep 202532.22'21.75-6.794°
15 Sep 202531.95'22.75-6.665°
27 Sep 202529.47'5.176.540°
28 Sep 202529.56'6.176.805°
29 Sep 202529.74'7.176.779°
30 Sep 202530.01'8.176.453°
11 Oct 202532.77'19.17-6.687°
12 Oct 202532.41'20.17-6.652°
25 Oct 202529.42'3.486.651°
26 Oct 202529.52'4.486.681°
27 Oct 202529.69'5.486.423°
07 Nov 202533.37'16.48-6.472°
08 Nov 202533.10'17.48-6.565°
21 Nov 202529.39'0.726.513°
22 Nov 202529.46'1.726.567°
05 Dec 202533.44'14.72-6.511°
18 Dec 202529.42'27.726.502°
19 Dec 202529.48'28.726.570°

Source: NASA/GSFC

Lunar Calendar 2024

Lunar Libration Calendar 2024 (PDF 11.2 MB)

View table online

Lunar Libration Calendar 2023 (PDF 3.3 MB)

 


Latest Deepsky Image

2025-03-21, TS-71SDQ (450mm), Uranus-C (IMX585), Quad-band filter, 147 x 60sec

 

Random Mini Poster

IC 1396 in Cepheus

View all posters

 

Latest Planetary Image

2025-01-14, Celestron 8, Uranus-C, UV/IR-Cut filter

 

Latest Movie

2023-11-23, Celestron 8, Uranus-C, UV/IR-Cut filter, exposure 1h42m

 

Latest Constellation Image

D5300a, 135mm lens at f2.0, LPF II, 28 x 60s, ISO800.

 

Latest Lunar Image

C8, ASI290MM, IR642 filter (Mar 11, 2025).

 

Latest Astro Poster

Samyang 135mm, Uranus-C, dual-band and LPR filters.

 

Latest Infographic

Celestron 8 XLT, Uranus-C, UV/IR filter

 

Latest Lunar Poster

Celestron 8 XLT, Uranus-C, UV/IR filter

 

Astronomy Picture of the Day

Click to enlarge or show full screen

 


 

Source: apod.nasa.gov

Latest STScI News Release

20-Year Hubble Study of Uranus Yields New Atmospheric Insights

Four space telescope images of Uranus arranged horizontally. From left to right, they are labeled: 2002, 2012, 2015, and 2022. In all four images, the planet appears blue-green in color, with faint vertical bands of slightly lighter or darker color. The pattern is slightly different in each image.

March 31, 2025

Four space telescope images of Uranus arranged horizontally. From left to right, they are labeled: 2002, 2012, 2015, and 2022. In all four images, the planet appears blue-green in color, with faint vertical bands of slightly lighter or darker color. The pattern is slightly different in each image.

Source: stsci.edu/news

Tonight's Sky

Has been moved to YouTube

 

Latest JWST News

Webb sees galaxy is mysteriously clearing fog of early Universe

JADES-GS-z13-1 in the GOODS-S field (NIRCam image, annotated)

26 March 2025

Using the unique infrared sensitivity of the NASA/ESA/CSA James Webb Space Telescope, researchers can examine ancient galaxies to probe secrets of the early universe. Now, an international team of astronomers has identified bright hydrogen emission from a galaxy in an unexpectedly early time in the Universe’s history. The surprise finding is challenging researchers to explain how this light could have pierced the thick fog of neutral hydrogen that filled space at that time.


Source: esawebb.org

JWST Picture of the Month

Spying a spiral through a cosmic lens

https://cdn.esawebb.org/archives/images/thumb350x/potm2503a.jpg

27 March 2025
This new NASA/ESA/CSA James Webb Space Telescope Picture of the Month features a rare cosmic phenomenon called an Einstein ring. What at first appears to be a single, strangely shaped galaxy is actually two galaxies that are separated by a large distance. The closer foreground galaxy sits at the center of the image, while the more distant background galaxy appears to be wrapped around the closer galaxy, forming a ring. Einstein rings occur when light from a very distant object is bent (or ‘lensed’) about a massive intermediate (or ‘lensing’) object. This is possible because spacetime, the fabric of the Universe itself, is bent by mass, and therefore light travelling through space and time is bent as well. This effect is much too subtle to be observed on a local level, but it sometimes becomes clearly observable when dealing with curvatures of light on enormous, astronomical scales, such as when …


Source: esawebb.org

NASA Image of the Day

Studying Ice for the Future of Flight

Thomas Ozoroski, a researcher at NASA’s Glenn Research Center in Cleveland, takes icing accretion measurements in October 2024 as part of transonic truss-braced wing concept research. Researchers at NASA Glenn conducted another test campaign in March 2025.

Click to enlarge or show full screen

Tue, 01 Apr 2025 16:52 GMT


Source: www.nasa.gov

Astro Weather

 

 

 

No, we are not on Facebook but proudly on AstroBin with Mille Gracie to the author Salvatore Iovene:


GoTo Astropical on AstroBin

 

If anybody is interested in the night life of bats, here is a funny 1-minute MP4 video (24MB).

 


Lunar Imaging e-brochure (PDF 100.5 MB)

 

EAA e-brochure (PDF 90.8 MB) In work. Pre-release for feedbacks.

 

Planetary Imaging e-brochure (PDF 17.4 MB) In work. Pre-release for feedbacks.

 


Recent

1. Certain people appear to enjoy filling forms with random letters for no purpose but insane self-satisfaction. Most of this stupid folks leave their IP addresses which are forwarded to their provider companies. This kind of human crap should not be entitled for using the internet. All so received forms are automatically deleted. Sadly, the world is overfilled with idiots, trolls and criminals. This is a public web site without any sensitive data. No need for these irrational displays.

2. Now in the process of changing all large images to AVIF or WEBP format resulting in considerably reduced file size and download time hardly sacrificing quality as compared with JPEG.

 

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Registration

 

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If you do not wish to register (no problem) but need to see data for your location only once or so, then you can add the following string to the URL:
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where xx.xxx need to be replaced by your geographic coordinates, z.zz with your time zone. This data will not be stored.

This 'once-view' will work for most pages, such as Planisphere, Deepsky Observer, Ephemerides and Today Monitor.

 


US, Arizona, Phoenix
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Last visit from: US 
on page confinder.php using iPhone O/S.

Unique visitors today: 30 (since 0:00 UTC) from:
                       

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from 31 different countries (excluding bots & idiots).

                                                           

 

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Site Updates

 


Deepsky Overview
My Humble Gallery
Lunar Imaging
FOV Simulator
Astro Cameras
Let's Astrophoto
Telescopes for AP

 


 

Total Exoplanet Count: 5862

Kepler/K2: 3326 planets
TESS: 618 planets
Latest exoplanet around:  
as of 2025-03-18

ConstellationDraco
Distance78.74 parsec
Magnitude11.11 vis.
Mass0.71 xSun
Radius0.72 xSun
Temperature4975°K
Known planet(s)2
View in Database | Star Chart | DSS IR Image 🔗

 


Acton Sky Portal Observatory 2
Anglo-Australian Telescope 35
Apache Point Observatory 1
Arecibo Observatory 3
Atacama Large Millimeter Array (ALMA) 1
Bohyunsan Optical Astronomical Observatory 26
Calar Alto Observatory 22
Cerro Tololo Inter-American Observatory 5
CHaracterising ExOPlanets Satellite (CHEOPS) 3
CoRoT 35
European Southern Observatory 3
European Space Agency (ESA) Gaia Satellite 13
Fred Lawrence Whipple Observatory 6
Gemini Observatory 13
Haleakala Observatory 2
HATNet 67
HATSouth 73
Haute-Provence Observatory 67
Hubble Space Telescope 6
Infrared Survey Facility 1
James Webb Space Telescope (JWST) 1
K2 547
KELT 10
KELT-North 7
KELT-South 4
Kepler 2779
Kitt Peak National Observatory 1
KMTNet 101
KOINet 1
La Silla Observatory 286
Large Binocular Telescope Observatory 3
Las Campanas Observatory 29
Leoncito Astronomical Complex 1
Lick Observatory 36
Lowell Observatory 3
Mauna Kea Observatory 2
McDonald Observatory 31
MEarth Project 2
MOA 31
Multiple Facilities 18
Multiple Observatories 325
NASA Infrared Telescope Facility (IRTF) 1
Next-Generation Transit Survey (NGTS) 21
OGLE 106
Okayama Astrophysical Observatory 36
Palomar Observatory 2
Paranal Observatory 30
Parkes Observatory 2
Qatar 10
Roque de los Muchachos Observatory 35
South African Radio Astronomy Observatory (SAR 1
SPECULOOS Southern Observatory 2
Spitzer Space Telescope 4
Subaru Telescope 11
SuperWASP 113
SuperWASP-North 5
SuperWASP-South 32
Teide Observatory 1
Thueringer Landessternwarte Tautenburg 8
Transiting Exoplanet Survey Satellite (TESS) 618
TrES 5
United Kingdom Infrared Telescope 2
University of Canterbury Mt John Observatory 1
Very Long Baseline Array 1
W. M. Keck Observatory 189
WASP-South 11
Wide-field Infrared Survey Explorer (WISE) Sat 1
Winer Observatory 1
Xinglong Station 2
XO 6
Yunnan Astronomical Observatory 3


 

⎘

Next NEO Approach

2025 GA on 2025-Apr-02 02:48 UTC at 0.2214 LD

 

⎘

Next Meteor Shower

Lyrids
16 Apr - 25 Apr, Peak: 4/22
Radiant: Star Chart, Rating: bright
15 per hour, bright and long lasting meteors. Parent body is Comet C/Thatcher (1861 G1).

 

⎘

ISS Live Cameras

NOTE: You need to log in for correct data.

 

Random Objects

 

Rukbalgethi Shemali (22 Tau Her) in Her [HIP 79992]

Distance: 315 light-years, Magnitude: 3.91

Rukbalgethi Shemali (Arabic for 'northern knee') is a class-B blue sungiant star shining at 700 times the solar luminosity. The star was the north pole star around the year 7400 BC.

Star Chart | DSS IR Image 🔗

 

GJ 234 A (Ross 614 A ) in Monoceros

Distance: 13 light-years, Magnitude: 11.1

Ross 614 (V577 Monocerotis) is a 11th magnitude red dwarf UV Ceti-type flare star and is double with another 14th magnitude class-M red dwarf with an orbital period of 16.6 years.

Star Chart | DSS IR Image 🔗

 

M31 (Galaxy) in Andromeda

Magnitude: 4.3

At a distance of 2.5 million ly away in the constellation of Andromeda, the barred spiral galaxy Messier 31 has a diameter of about 152000 ly in space or 3.2º x 1º apparent in the sky. It resembles our Milky Way in various respects and both galaxies are expected to merge in 4-5 billion years. Shining at magnitude 3.4 with an estimated total of 1 trillion stars, M31 is visible to the naked eye. It has two major satellite galaxies, M32 and M110 (in total 20 known) plus 460 globular clusters associated with it. M31 is surrounded by a massive halo of hot gas which stretches about a million ly into space halfway to our Milky Way Galaxy.

Star Chart | DSS IR Image 🔗

 

Pavo (southern), area rank: 44

Located near the celestial south pole, this constellation can be seen from the vantage of less than 30 degrees northern latitudes. The constellation lines describe a peacock with a stretched neck and raised tail feathers. The 2nd-magnitude star in the neck is also called 'Peacock'.

Star Chart

 

153P/Ikeya-Zhang

Discovered in 2002, 153P/Ikeya-Zhang is a long-periodic comet with the longest known period (366.5 years) for returning comets. On March 18, 2002, the comet last passed perihelion and became the brightest comet since 1997 shining at 3.5 magnitudes. The comets aphelion distance is at over 100 AU away through the Kuiper Belt reaching into the innermost section of the Oort Cloud.

 

 

Bienor (Centaur)

Semi-major: 16.48620 AU, Size: 210 km

Discovered on August 27, 2000, 54598 Bienor is a centaur that grazes the orbit of Uranus.

 

 

Thalassa (moon of Neptune)

Discovered in 1989 in Voyager 2 images, Thalassa is the second innermost moon of Neptune. Thalassa is irregularly shaped (108x100x52 km) and shows no sign of geological activity. Thalassa's orbit lies below Neptune's synchronous orbit radius and is slowly spiraling down and will eventually impact or break up into a ring.

 

 

OGLE-2015-BLG-1771L b (in Sagittarius)

Mass: 0.433 xJup
SMA: 0.85 AU
Distance: 7070 parsec
Category: Jovian
ESI: 0

Star Chart | DSS IR Image 🔗

 

Android Astronomy Apps

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App Web Site (Manual and Download)

 

 

3D Visualizations

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Dark Site in Morocco

Some say that the seeing is better only in space.

Click on the banner to visit the new website of SaharaSky, the first and currently only private observatory with Casbah-style *** hotel in North Africa.

 

The owner, Fritz, is a German with a life-long passion for astronomy. Then, as he felt in deep love with Morocco and its wonderful people, he built a self-contained hotel at the feet of the Sahara about 30 kilometers to the southeast of the town of Zagora entirely in the traditional southern Moroccan Casbah-style and equipped it, besides comfortable rooms, a restaurant, spa and sauna, with a rich portfolio of optical instruments and accessories for amateur astronomers.

Fritz chose the location extremely well, a truly dark site in absence of city and street lights, blessed with an average of 300 clear dry nights annually. The observatory atop the hotel building offers a 360 degrees panoramic view on 500 square meters.

Most guests are professional and amateur astronomers, but also people of all ages with affection for the fascination of the stars and the desert. From the hotel's wide roof terrace, everybody can enjoy the starry sky dominated by the arch of the Milky Way with bare eyes or with rental telescopes and cameras.

The heart and soul of SaharaSky's observatory is Patrick from Belgium, not only a senior professional astronomer, but also a talented animator and entertainer under the Saharan stars.

A stay at SaharaSky is not limited to the night sky. SaharaSky provides equipment for solar observation, but Fritz also organises desert excursions for several days, overnight or day-return treks in a 4x4 or on dromedar backs, plus guided tours to historically invaluable local sites, such as the Petroglyphs of Ait Ouazzik.

Owner and staff as a team speak Arabic, local Berber, English, French, German, Spanish and Dutch.

Scotty, lock on to the coordinates of SaharaSky and beam us over!


SaharaSky owns telescopes with apertures from 40 to 400mm, such as Takahashi APOs, each of which can be saddled on high precision GM2000 mounts featuring GPS, GoTo and accurate guiding for both, visual observation and photography.

 

 

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Comments

admin
[76] 2025-02-26 07:47:23
Hi Gilles, thanks a lot for your kind feed back. The download is working again. Cheers Robert

Gilles Morain
[75] 2025-02-25 12:32:07
Hi, I just found your wonderful web site with so much practical info and tools that I will probably spend too much time on it :-) Congratulations for all this. I just wanted to inform you that I noticed an issue with the "DeepSky for Starters" PDF download: the downloaded file fails to open once retrieved on my computer (moon & planetary are ok though). Best regards, Gilles (from France)