Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]
Dwarf Planets and Asteroids » 

Asteroid 11 Parthenope

Available Resources

Asteroid 11 Parthenope Position

Asteroid 11 Parthenope is currently in the constellation of Aquarius. The current Right Ascension is 23h 00m 17s and the Declination is -07° 52’ 47”.

23h 00m 17s
-07° 52’ 47”

Simplified sky chart showing where Asteroid 11 Parthenope is right now in the sky with respect to the brightest stars and constellations (see full screen Online Planetarium)

Map showing Asteroid 11 Parthenope in Aquarius on April, 04 2020
Field of view: 60x30 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Higher precision deep sky finder chart showing where Asteroid 11 Parthenope is right now (view fullscreen)

11 Parthenope
RA: 23h 00m 17s
Dec: -07° 52’ 47”
Deep sky finder chart for Asteroid 11 Parthenope
Field of view: 60x40 arcmins
View fullscreen

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

The distance of Asteroid 11 Parthenope from Earth is currently 448,896,359 kilometers, equivalent to 3.000687 Astronomical Units. Light takes 24 minutes and 57.3571 seconds to travel from Asteroid 11 Parthenope and arrive to us.

24 minutes and 57.3571 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.

Distance of Asteroid 11 Parthenope from Earth between January 2013 and December 2100

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 January 2013 and December 2100 the closest approach of Asteroid 11 Parthenope to Earth happens on Mon Aug 11 2081 at a distance of 1.18705018 Astronomical Units, or 177,580,180 kilometers:

Mon Aug 11 2081

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

Asteroid 11 Parthenope brightness

The current visual magnitude of Asteroid 11 Parthenope is 11.39.


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.

Predicted magnitude of Asteroid 11 Parthenope between January 2013 and December 2100

Asteroid 11 Parthenope rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Asteroid 11 Parthenope rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 97.9°
Max altitude: 30.7°
Azimuth: 262.2°
Asteroid 11 Parthenope is above the horizon from Greenwich, United Kingdom

The rise and set times are defined as the time at which the upper limb of Asteroid 11 Parthenope touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Asteroid 11 Parthenope Orbital Elements

The following table lists the orbital elements of Asteroid 11 Parthenope at epoch 30 May 2020 00:00 UTC (JD: 2459000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.09982332
Orbit inclination i 4.63182477°
Perihelion distance q 2.20758410 AU
330,249,882 km
Aphelion distance Q 2.69719546 AU
403,494,698 km
Semi-major axis a 2.45238978 AU
366,872,290 km
Orbital period period 3.8400 years
1,402.7577 days
Date of perihelion transit Tp 2020-Mar-07 10:30:24
2,458,915.9378 JD
Next perihelion transit 2024-Jan-09 04:41
2,460,318.6955 JD
Argument of perihelion peri 195.35905052959°
Longitude of the ascending node node 125.52837934923°
Mean anomaly M 21.701822015291°
Mean motion n 0.25663733°/day

Visualization of Asteroid 11 Parthenope Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid 11 Parthenope with respect of the Sun and the orbits of the major planets. The position of Asteroid 11 Parthenope and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!

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. Click on each row of the table to locate Asteroid 11 Parthenope in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2020 Mar 28 22h 46m 18s -09° 09’ 08” 11.37 Aquarius
2020 Mar 29 22h 48m 15s -08° 58’ 36” 11.37 Aquarius
2020 Mar 30 22h 50m 11s -08° 48’ 05” 11.38 Aquarius
2020 Mar 31 22h 52m 08s -08° 37’ 32” 11.38 Aquarius
2020 Apr 01 22h 54m 03s -08° 26’ 57” 11.38 Aquarius
2020 Apr 02 22h 55m 59s -08° 16’ 23” 11.39 Aquarius
2020 Apr 03 22h 57m 55s -08° 05’ 48” 11.39 Aquarius
2020 Apr 04 22h 59m 50s -07° 55’ 13” 11.39 Aquarius
2020 Apr 05 23h 01m 45s -07° 44’ 38” 11.40 Aquarius
2020 Apr 06 23h 03m 41s -07° 34’ 01” 11.40 Aquarius
2020 Apr 07 23h 05m 35s -07° 23’ 26” 11.40 Aquarius
2020 Apr 08 23h 07m 29s -07° 12’ 50” 11.40 Aquarius
2020 Apr 09 23h 09m 24s -07° 02’ 13” 11.41 Aquarius
2020 Apr 10 23h 11m 17s -06° 51’ 38” 11.41 Aquarius