Compute the position of Asteroid 13 Egeria for any date and time between 1 January 1900
and 31 December 2099
and visualize the results on an interactive sky map.
Asteroid 13 Egeria is a relatively large asteroid with a diameter of approximately 214 kilometers. It was discovered on November 2, 1850, by Italian astronomer Annibale de Gasparis and named after the Roman goddess Egeria, who was associated with wisdom and prophecy. The asteroid orbits the Sun between Mars and Jupiter, with a semi-major axis of approximately 2.66 astronomical units (AU) and an orbital period of about 4.45 years. Egeria's orbit is moderately eccentric and inclined compared to other asteroids in the main belt. It rotates relatively slowly, with a rotation period of about 14.1 hours. Egeria is also classified as a C-type asteroid, indicating that its surface is likely rich in carbonaceous materials. It is relatively bright and can be observed with a small telescope under favorable conditions.
Asteroid 13 Egeria is in the constellation of
Perseus,
at a distance of 301,099,059.0 kilometers from Earth.
The current Right Ascension is
04h 06m 52s
and the Declination is +35° 53’ 50”
(apparent coordinates).
The magnitude of Asteroid 13 Egeria is 11.48 (data provided by JPL Horizons).
Sky map showing Asteroid 13 Egeria in Perseus on February, 15 2025.
Field of view: 15x9 degrees. View in interactive sky chart
High precision deep sky finder chart, 60 arcmin wide, showing where Asteroid 13 Egeria is right now.
Click on the image to see a more detailed fullscreen tracker view.
Deep sky finder chart for Asteroid 13 Egeria.
Field of view: 60x40 arcmins.
View in deep sky object tracker
Also check out Where is Asteroid 13 Egeria?,
a page that provides all the information needed to find Asteroid 13 Egeria in the sky and additional links to sky charts.
If you need to access this information frequently for your observations, you can create a simple
customized Quick Access page,
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Distance from Earth
The distance of Asteroid 13 Egeria from Earth is currently 301,099,059.0 kilometers,
equivalent to 2.0127228923Astronomical Units.
Light takes
16m 44.358s to travel from Asteroid 13 Egeria and arrive to us.
301,099,059.0
2.0127228923
16m 44.358s
The following chart shows the distance of Asteroid 13 Egeria 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 13 Egeria 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 13 Egeria from Earth is also available as a real time updated value in the
Live Position and Data Tracker.
Closest Approach
Between 1 January 1900 and 31 December 2099,
the closest approach of
Asteroid 13 Egeria to Earth happens on
Fri Jan 14 1955 at a distance of
1.428381 Astronomical Units, or
213,682,816 kilometers:
Fri Jan 14 1955
213,682,816
1.428381
NOTE: values for the closest approach are computed
with a sampling interval of 1 day.
Light Curve
The following chart is the predicted light curve
(visual magnitude as a function of time) of Asteroid 13 Egeria,
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 13 Egeria as a function of time
The following shows the known values of the most important physical parameters of Asteroid 13 Egeria.
Source: JPL Small-Body Database
Physical Parameter
Value
Relative to Earth
Diameter
207.64 km
0.0163
Sideral Rotation
7.0450 hours
0.2943
Absolute Magnitude
6.74
Geometric Albedo
0.0825
15 Days Ephemeris
The following table lists the ephemerides of Asteroid 13 Egeria computed for the past and next 7 days, with a 24 hours interval.
Apparent celestial coordinates are provided.
Compute the position of Asteroid 13 Egeria for any date and time between 1 January 1900
and 31 December 2099
and display the results on an interactive star map.
Orbital elements. Detailed information
about Asteroid 13 Egeria orbital parameters.
Interactive orbit visualization. 3d
visualization showing the orbit of Asteroid 13 Egeria with respect to the major Solar System objects.
Physical data. Detailed
information about physical properties of Asteroid 13 Egeria, such as mass and geometric properties.
15 days ephemerides. Table
showing celestial coordinates and magnitude of Asteroid 13 Egeria for the past and next 7 days.
Interactive sky chart. An online planetarium application that shows where to locate Asteroid 13 Egeria in the sky from your location.
Live position tracker. A high precision sky chart that uses real deep sky imagery to help locate Asteroid 13 Egeria with your telescope or on your astrophotographies.