Asteroid 11 Parthenope
Asteroid 11 Parthenope is in the constellation of Gemini, at a distance of
Finder Charts
The sky charts below show, at different resolutions, the position of asteroid 11 Parthenope in the sky. Click on each chart to access the interactive star map tool.
The following map uses photographic imagery from the Digitized Sky Survey (DSS) to realistically visualize the precise position of asteroid 11 Parthenope against the stars in the background. The horizontal size of the map measures 60 arcminutes. Click on the image to access a more detailed full-screen view.
Equatorial Coordinates
Apparent
J2000
Additional Information
Rise and Set Times
The following table lists today's rise, transit and set times of asteroid 11 Parthenope from Skópelos, Grecia (all times relative to the local timezone Europe/Athens):
If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.
Distance from Earth
The distance of asteroid 11 Parthenope from Earth is currently
The following graph shows the distance of asteroid 11 Parthenope from Earth as a function of time. In the chart the distance is measured in Astronomical Units and the data is sampled with an interval of 1 day.
Note: The values in this chart may not be entirely accurate around the time of closest approach for objects passing very close to Earth at high speed (e.g., Near-Earth Objects).
The value of the distance of 11 Parthenope from Earth is also available as a real time updated value in the live position tracker.
Closest Approach to Earth
In the period between January 1, 1900 and December 31, 2099, the closest approach of asteroid 11 Parthenope to Earth will happen on Monday 11 August 2081 at a distance of 1.187050 Astronomical Units, or 177,580,172 kilometers:
Note: the values for the closest approach are computed with a sampling interval of 1 day.
Light Curve
The following chart shows the light curve of asteroid 11 Parthenope, i.e., its apparent magnitude as a function of time. The curve is calculated using the latest ephemerides provided by JPL Horizons. The magnitude data is sampled with the interval of 2 days. Because of this sampling, inaccuracies may occur for objects that have large variations of brightness over a few days. For comets, large discrepancies can arise between the calculated brightness and the observations due to their highly dynamic, and not always precisely predictable, behavior.
Orbital Elements
The following table lists the orbital elements of asteroid 11 Parthenope at epoch February, 24 2023 00:00 UTC (JD: 2460000.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.09941749 |
| Orbit inclination | i | 4.63133416° |
| Perihelion distance | q | 2.20919106 AU 330,490,279 km |
| Aphelion distance | Q |
2.69694697 AU 403,457,525 km |
| Semi-major axis | a |
2.45306902 AU 366,973,902 km |
| Orbital period | period |
3.8421 years 1,403.3406 days |
| Date of perihelion transit | Tp | January 11, 2024 2,460,320.6847 JD |
| Next perihelion transit | November 14, 2027 2,461,724.0253 JD |
|
| Argument of perihelion | peri | 195.73724774726° |
| Longitude of the ascending node | node | 125.52086857436° |
| Mean anomaly | M | 277.86276820831° |
| Mean motion | n | 0.25653075°/day |
Orbit Visualization
The following chart is a 3D animated visualization of the orbit of asteroid 11 Parthenope relative to the other major objects in the Solar System. You can access more advanced features using our 3D Solar System Viewer.
Physical Properties
The table below lists the known key physical properties of asteroid 11 Parthenope. The source for this data is the JPL Small-Body Database.
| Physical Parameter | Value | Relative to Earth |
|---|---|---|
| Diameter | 153.33 km | 0.0120 |
| Sideral Rotation | 13.7204 hours | 0.5732 |
| Absolute Magnitude | 6.55 | |
| Geometric Albedo | 0.1803 |
15 Days Ephemeris
The following table lists the ephemerides of asteroid 11 Parthenope 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 |
|---|---|---|---|---|
| Jul 01 2025 | 07h 02m 26s | +21° 32’ 25” | 11.89 | Gemini |
| Jul 02 2025 | 07h 04m 15s | +21° 30’ 25” | 11.88 | Gemini |
| Jul 03 2025 | 07h 06m 04s | +21° 28’ 19” | 11.86 | Gemini |
| Jul 04 2025 | 07h 07m 53s | +21° 26’ 08” | 11.85 | Gemini |
| Jul 05 2025 | 07h 09m 41s | +21° 23’ 53” | 11.83 | Gemini |
| Jul 06 2025 | 07h 11m 30s | +21° 21’ 33” | 11.82 | Gemini |
| Jul 07 2025 | 07h 13m 18s | +21° 19’ 09” | 11.80 | Gemini |
| Jul 08 2025 | 07h 15m 07s | +21° 16’ 39” | 11.78 | Gemini |
| Jul 09 2025 | 07h 16m 55s | +21° 14’ 07” | 11.77 | Gemini |
| Jul 10 2025 | 07h 18m 42s | +21° 11’ 29” | 11.75 | Gemini |
| Jul 11 2025 | 07h 20m 30s | +21° 08’ 46” | 11.75 | Gemini |
| Jul 12 2025 | 07h 22m 18s | +21° 05’ 59” | 11.77 | Gemini |
| Jul 13 2025 | 07h 24m 06s | +21° 03’ 08” | 11.78 | Gemini |
| Jul 14 2025 | 07h 25m 54s | +21° 00’ 12” | 11.80 | Gemini |
Additional Resources on TheSkyLive
- Asteroid 11 Parthenope: Complete reference information on TheSkyLive.com.
- Where is asteroid 11 Parthenope?: Key information on where to find asteroid 11 Parthenope in the sky.
- Distance of asteroid 11 Parthenope from Earth: Find out how far asteroid 11 Parthenope is from Earth right now.
- How Bright is asteroid 11 Parthenope?: Current visual brightness (magnitude) and apparent size.
- Rise and Set Times: Rise and set times of asteroid 11 Parthenope from your location.
- Interactive Sky Map: Planetarium-style interactive visualization of asteroid 11 Parthenope's position in the sky.
- Live Position Tracker: High precision real time tracker of asteroid 11 Parthenope's position using deep space imagery.
- Ephemeris: 15 days asteroid 11 Parthenope's computed ephemeris.
- Orbital elements: Information about asteroid 11 Parthenope orbital parameters.
- Orbit Visualization: 3D interactive visualization showing the orbit of asteroid 11 Parthenope with respect to the major Solar System objects.
- Physical Data: Detailed information about physical properties of asteroid 11 Parthenope.