Your guide to the Solar System
🌎 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 Ophiucus. The current Right Ascension is 16h 58m 09s and the Declination is -20° 46’ 32”.

16h 58m 09s
-20° 46’ 32”

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

Map showing Asteroid 11 Parthenope in Ophiucus on October, 15 2019
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]

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

11 Parthenope
RA: 16h 58m 09s
Dec: -20° 46’ 32”
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 404,628,890 kilometers, equivalent to 2.704777 Astronomical Units. Light takes 22 minutes and 29.6967 seconds to travel from Asteroid 11 Parthenope and arrive to us.

22 minutes and 29.6967 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 1.18705014 Astronomical Units, or 177,580,174 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 11.51.


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: 110.8°
Max altitude: 17.7°
Azimuth: 249.2°
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, consideting the effect of the atmospheric refraction. As the atmoshpere 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 26 April 2019 00:00 UTC (JD: 2458600.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.10047227
Orbit inclination i 4.62988584°
Perihelion distance q 2.20663990 AU
330,108,632 km
Aphelion distance Q 2.69957885 AU
403,851,248 km
Semi-major axis a 2.45310938 AU
366,979,940 km
Orbital period period 3.8400 years
1,403.3752 days
Date of perihelion transit Tp 2020-Mar-08 00:42:37
2,458,916.5296 JD
Argument of perihelion peri 195.55039378241°
Longitude of the ascending node node 125.54658677298°
Mean anomaly M 278.93069197961°
Mean motion n 0.25652441°/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
2019 Oct 08 16h 44m 11s -20° 11’ 53” 11.50 Ophiucus
2019 Oct 09 16h 46m 00s -20° 16’ 44” 11.50 Ophiucus
2019 Oct 10 16h 47m 50s -20° 21’ 32” 11.50 Ophiucus
2019 Oct 11 16h 49m 41s -20° 26’ 13” 11.51 Ophiucus
2019 Oct 12 16h 51m 33s -20° 30’ 51” 11.51 Ophiucus
2019 Oct 13 16h 53m 25s -20° 35’ 25” 11.51 Ophiucus
2019 Oct 14 16h 55m 17s -20° 39’ 53” 11.51 Ophiucus
2019 Oct 15 16h 57m 10s -20° 44’ 17” 11.51 Ophiucus
2019 Oct 16 16h 59m 03s -20° 48’ 35” 11.51 Ophiucus
2019 Oct 17 17h 00m 57s -20° 52’ 50” 11.52 Ophiucus
2019 Oct 18 17h 02m 52s -20° 56’ 57” 11.52 Ophiucus
2019 Oct 19 17h 04m 47s -21° 01’ 01” 11.52 Ophiucus
2019 Oct 20 17h 06m 42s -21° 04’ 59” 11.52 Ophiucus
2019 Oct 21 17h 08m 39s -21° 08’ 53” 11.52 Ophiucus