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Asteroid 11 Parthenope

Asteroid 11 Parthenope is currently in the constellation of Pisces. The current Right Ascension of Asteroid 11 Parthenope is 02h 01m 10s and the Declination is +07° 16’ 15” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid 11 Parthenope is 11.32 (JPL).

Summary of key facts about Asteroid 11 Parthenope [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

02h 01m 10s
+07° 16’ 15”
  • 11 Parthenope is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the South-East direction at an altitude of 34° above the horizon.
  • Given its current magnitude, 11 Parthenope is visible with the help of a binocular with a 70-80mm aperture or a small telescope.
  • See also 11 Parthenope rise and set times.
  • 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 information about Asteroid 11 Parthenope available on TheSkyLive:

Available Resources

Asteroid 11 Parthenope Position and Finder Charts

Below we provide Asteroid 11 Parthenope finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Asteroid 11 Parthenope in Pisces on January, 21 2021
Field of view: 50x30 degrees
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Map showing Asteroid 11 Parthenope in Pisces on January, 21 2021
Field of view: 10x6 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, 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 01m 10s
Dec: +07° 16’ 15”
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 from Earth

The distance of Asteroid 11 Parthenope from Earth is currently 336,520,220 kilometers, equivalent to 2.249499 Astronomical Units. Light takes 18 minutes and 42.5106 seconds to travel from Asteroid 11 Parthenope and arrive to us.

18 minutes and 42.5106 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 1.187050 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 11.32.


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: 82.7°
Max altitude: 45.8°
Azimuth: 277.2°

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
2021 Jan 14 01h 54m 11s +06° 20’ 07” 11.20 Pisces
2021 Jan 15 01h 55m 04s +06° 27’ 16” 11.22 Pisces
2021 Jan 16 01h 55m 55s +06° 34’ 31” 11.23 Pisces
2021 Jan 17 01h 56m 49s +06° 41’ 48” 11.25 Pisces
2021 Jan 18 01h 57m 43s +06° 49’ 09” 11.26 Pisces
2021 Jan 19 01h 58m 40s +06° 56’ 32” 11.28 Pisces
2021 Jan 20 01h 59m 35s +07° 04’ 00” 11.29 Pisces
2021 Jan 21 02h 00m 33s +07° 11’ 31” 11.31 Pisces
2021 Jan 22 02h 01m 32s +07° 19’ 05” 11.32 Pisces
2021 Jan 23 02h 02m 31s +07° 26’ 42” 11.34 Pisces
2021 Jan 24 02h 03m 32s +07° 34’ 20” 11.35 Pisces
2021 Jan 25 02h 04m 32s +07° 42’ 02” 11.36 Pisces
2021 Jan 26 02h 05m 35s +07° 49’ 45” 11.38 Pisces
2021 Jan 27 02h 06m 38s +07° 57’ 33” 11.39 Cetus