Asteroid 5 Astraea
Asteroid 5 Astraea is in the constellation of
Serpens,
at a distance of
Finder Charts
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High precision deep sky finder chart, 60 arcmin wide, showing where Asteroid 5 Astraea is right now. Click on the image to see a more detailed fullscreen tracker view.
Also check out Where is Asteroid 5 Astraea?, a page that provides all the information needed to find Asteroid 5 Astraea in the sky and additional links to sky charts.
Celestial Coordinates
Apparent
J2000
Additional Information
Rise and Set Times
Today's rise,
transit and set times of
Asteroid 5 Astraea from
Greenwich, UK (all times relative to the local timezone Europe/London):
Azimuth: 105.3°
Max altitude: 23.2°
Azimuth: 254.7°
- 5 Astraea is
above the horizon from Greenwich, UK.
- Right now it is placed in the South-West direction at an altitude of 14.78° above the horizon.
- Given its current magnitude, 5 Astraea is visible with the help of a binocular with a 70-80mm aperture or a small telescope.
- Go to interactive sky chart
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Distance from Earth
- 5 Astraea is above the horizon from Greenwich, UK.
- Right now it is placed in the South-West direction at an altitude of 14.78° above the horizon.
- Given its current magnitude, 5 Astraea is visible with the help of a binocular with a 70-80mm aperture or a small telescope.
- Go to interactive sky chart
The distance of Asteroid 5 Astraea from Earth is currently
The following chart shows the distance of Asteroid 5 Astraea from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.
The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 5 Astraea from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest Approach
Between 1 January 1900 and 31 December 2099, the closest approach of Asteroid 5 Astraea to Earth happens on Fri Feb 13 1925 at a distance of 1.093100 Astronomical Units, or 163,525,365 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Light Curve
The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 5 Astraea, according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.
Orbital Elements
The following table lists the orbital elements of Asteroid 5 Astraea at epoch 24 February 2023 00:00 UTC (JD: 2460000.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.18792368 |
| Orbit inclination | i | 5.36012857° |
| Perihelion distance | q | 2.09409950 AU 313,272,827 km |
| Aphelion distance | Q |
3.06329633 AU 458,262,609 km |
| Semi-major axis | a |
2.57869792 AU 385,767,718 km |
| Orbital period | period |
4.1410 years 1,512.5131 days |
| Date of perihelion transit | Tp | 2024-May-06 19:49:09 2,460,437.3258 JD |
| Next perihelion transit | 2028-Jun-27 08:07 2,461,949.8389 JD |
|
| Argument of perihelion | peri | 358.88655645318° |
| Longitude of the ascending node | node | 141.52276093715° |
| Mean anomaly | M | 256.0291368156° |
| Mean motion | n | 0.23801448°/day |
Orbit Visualization
View Asteroid 5 Astraea in the 3D Solar System Simulator
Physical Data
The following shows the known values of the most important physical parameters of Asteroid 5 Astraea. Source: JPL Small-Body Database
| Physical Parameter | Value | Relative to Earth |
|---|---|---|
| Diameter | 119.07 km | 0.0093 |
| Sideral Rotation | 16.8000 hours | 0.7019 |
| Absolute Magnitude | 6.85 | |
| Geometric Albedo | 0.2268 |
15 Days Ephemeris
The following table lists the ephemerides of Asteroid 5 Astraea computed for the past and next 7 days, with a 24 hours interval. Apparent celestial coordinates are provided.
| Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
|---|---|---|---|---|
| 2025 May 06 | 17h 27m 27s | -15° 32’ 05” | 11.11 | Serpens |
| 2025 May 07 | 17h 26m 54s | -15° 30’ 18” | 11.09 | Serpens |
| 2025 May 08 | 17h 26m 20s | -15° 28’ 31” | 11.07 | Serpens |
| 2025 May 09 | 17h 25m 44s | -15° 26’ 45” | 11.05 | Serpens |
| 2025 May 10 | 17h 25m 06s | -15° 25’ 03” | 11.03 | Serpens |
| 2025 May 11 | 17h 24m 28s | -15° 23’ 21” | 11.02 | Serpens |
| 2025 May 12 | 17h 23m 47s | -15° 21’ 41” | 11.00 | Serpens |
| 2025 May 13 | 17h 23m 06s | -15° 20’ 02” | 10.98 | Serpens |
| 2025 May 14 | 17h 22m 22s | -15° 18’ 26” | 10.96 | Serpens |
| 2025 May 15 | 17h 21m 38s | -15° 16’ 51” | 10.94 | Serpens |
| 2025 May 16 | 17h 20m 53s | -15° 15’ 19” | 10.92 | Serpens |
| 2025 May 17 | 17h 20m 06s | -15° 13’ 49” | 10.90 | Serpens |
| 2025 May 18 | 17h 19m 19s | -15° 12’ 20” | 10.88 | Serpens |
| 2025 May 19 | 17h 18m 30s | -15° 10’ 55” | 10.87 | Ophiuchus |
Additional Resources on TheSkyLive
- Asteroid 5 Astraea: Complete reference information on TheSkyLive.com
- Where is Asteroid 5 Astraea?: Key information on locating Asteroid 5 Astraea in the sky.
- Distance from Earth: Find out how far Asteroid 5 Astraea is from Earth right now.
- How Bright is Asteroid 5 Astraea?: Current visual brightness (magnitude) and apparent size.
- Rise and Set Times: Asteroid 5 Astraea's rise and set times from your location.
- Interactive Sky Map: planetarium-style interactive visualization of Asteroid 5 Astraea's position in the sky.
- Live Position Tracker: high precision position tracker with deep space imagery.
- Ephemeris: 15 days Asteroid 5 Astraea's computed ephemeris.
- Orbital elements: information about Asteroid 5 Astraea orbital parameters.
- Orbit Visualization. 3d interactive visualization showing the orbit of Asteroid 5 Astraea with respect to the major Solar System objects.
- Physical Data. Detailed information about physical properties of Asteroid 5 Astraea, such as mass and geometric properties.