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public LocationGreenwich, UK
Sunrise: 4:57 
Transit: 13:04 
Sunset: 21:10
sunny   (Daytime)   What's Visible Now?
Dwarf Planets and Asteroids » 

Asteroid 11 Parthenope

Below the horizon.  Rise: 1:22 | Tran: 8:19 | Set: 15:16
Altitude: -0.1°   Azimuth: 288.7°   Direction: West-North-West

Asteroid 11 Parthenope is currently in the constellation of Aries, at a distance of 368,795,866 kilometers from Earth.

The current Right Ascension of Asteroid 11 Parthenope is 02h 42m 15s and the Declination is +11° 26’ 07” (topocentric coordinates computed for Greenwich, UK).

The magnitude of Asteroid 11 Parthenope is 11.64 (data provided by JPL Horizons)

Finder chart of 11 Parthenope in Aries on July,12 2024
Map showing Asteroid 11 Parthenope in Aries on July, 12 2024. Field of view: 50x30 degrees
View interactive star map

Asteroid 11 Parthenope is a large, main-belt asteroid with a diameter of approximately 162 kilometers. It was discovered on May 11, 1850, by Italian astronomer Annibale de Gasparis and named after the Siren of Greek mythology, Parthenope. The asteroid orbits the Sun between Mars and Jupiter, with a semi-major axis of approximately 2.45 astronomical units (AU) and an orbital period of about 4.04 years. Parthenope's orbit is relatively eccentric and inclined compared to other asteroids in the main belt. It rotates slowly, with a rotation period of about 16 hours. Parthenope is also classified as a C-type asteroid, indicating that its surface is likely rich in carbonaceous materials.

02h 42m 15s
+11° 26’ 07”

Today's rise, transit and set times of Asteroid 11 Parthenope from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 78.6°
Max altitude: 49.9°
Azimuth: 281.4°
  • 11 Parthenope is below the horizon from Greenwich, UK.
  • Given its current magnitude, 11 Parthenope is visible with the help of a telescope having an aperture of 4 inches (100mm) or more.
  • Go to interactive sky chart

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.

Additional Resources

Asteroid 11 Parthenope Position and Finder Charts

Finder chart of 11 Parthenope
Sky map showing Asteroid 11 Parthenope in Aries on July, 12 2024. Field of view: 10x6 degrees. View in interactive sky chart

High precision deep sky finder chart, 60 arcmin wide, showing where Asteroid 11 Parthenope is right now. Click on the image to see a more detailed fullscreen tracker view.

11 Parthenope
RA: 02h 42m 15s
Dec: +11° 26’ 07”
Deep sky finder chart for Asteroid 11 Parthenope. Field of view: 60x40 arcmins. View in deep sky object tracker

Also check out Where is Asteroid 11 Parthenope?, a page that provides all the information needed to find Asteroid 11 Parthenope in the sky and additional links to sky charts.

Asteroid 11 Parthenope Distance from Earth

The distance of Asteroid 11 Parthenope from Earth is currently 368,795,866 kilometers, equivalent to 2.465248 Astronomical Units. Light takes 20 minutes and 30.1706 seconds to travel from Asteroid 11 Parthenope and arrive to us.

20 minutes and 30.1706 seconds

The following chart shows the distance of Asteroid 11 Parthenope 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.

Chart of the distance of Asteroid 11 Parthenope from Earth in Astronomical Units (au)

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 11 Parthenope from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest Approach of Asteroid 11 Parthenope to Earth

Between 1 January 1900 and 31 December 2099, the closest approach of Asteroid 11 Parthenope to Earth happens on Mon Aug 11 2081 at a distance of 1.187050 Astronomical Units, or 177,580,172 kilometers:

Mon Aug 11 2081

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Asteroid 11 Parthenope Brightness and Light Curve

The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 11 Parthenope, 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.

Chart of the magnitude of Asteroid 11 Parthenope as a function of time

Asteroid 11 Parthenope Orbital Elements

The following table lists the orbital elements of Asteroid 11 Parthenope at epoch 24 February 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 2024-Jan-11 04:26:02
2,460,320.6847 JD
Next perihelion transit 2027-Nov-14 12:36
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

Visualization of Asteroid 11 Parthenope Orbit

Orbit Diagram of Asteroid 11 Parthenope
View Asteroid 11 Parthenope in the 3D Solar System Simulator

Asteroid 11 Parthenope Physical Data

The following shows the known values of the most important physical parameters of Asteroid 11 Parthenope. Source: 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

Asteroid 11 Parthenope 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.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2024 Jul 05 02h 30m 33s +10° 41’ 53” 11.67 Aries
2024 Jul 06 02h 32m 07s +10° 48’ 02” 11.66 Aries
2024 Jul 07 02h 33m 41s +10° 54’ 06” 11.66 Aries
2024 Jul 08 02h 35m 13s +11° 00’ 02” 11.66 Aries
2024 Jul 09 02h 36m 46s +11° 05’ 53” 11.65 Aries
2024 Jul 10 02h 38m 18s +11° 11’ 39” 11.65 Aries
2024 Jul 11 02h 39m 50s +11° 17’ 18” 11.64 Aries
2024 Jul 12 02h 41m 21s +11° 22’ 54” 11.64 Aries
2024 Jul 13 02h 42m 51s +11° 28’ 22” 11.63 Aries
2024 Jul 14 02h 44m 21s +11° 33’ 44” 11.62 Aries
2024 Jul 15 02h 45m 51s +11° 39’ 01” 11.62 Aries
2024 Jul 16 02h 47m 21s +11° 44’ 12” 11.61 Aries
2024 Jul 17 02h 48m 48s +11° 49’ 17” 11.61 Aries
2024 Jul 18 02h 50m 17s +11° 54’ 16” 11.60 Aries