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Asteroid

Eugenia

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45 Eugenia (A857 MA)

Where is it now

Distance from Sun
2.703 AU
True anomaly
270.59°
Distance from Earth
3.277 AU
As of
21 October 2026

Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.995 AU from the Sun Earth Eugenia — 2.703 AU from the Sun Eugenia
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Eugenia is 3.277 AU from Earth today (27.3 light-minutes).

In the sky

Right ascension
10h 49m 55s
Declination
+07° 12′ 51″
Constellation
Leo
Distance from Earth
3.28 AU
Elongation from the Sun
47.42° — near the Sun — look low at dusk or dawn

Visible from both hemispheres.

From your location

See how high it is right now, whether it is up after civil twilight, and when it rises and sets where you are.

How do I find my coordinates?

Google Maps on a computer

  1. Right-click the spot where you'll be observing.
  2. The first line of the menu is the coordinates, e.g. 51.50722, -0.12758 — click it and they're copied.
  3. Paste them above.

Google Maps on a phone

  1. Press and hold the spot to drop a pin.
  2. The coordinates appear in the search bar (or on the pin's card) — tap to copy, then paste above.

A full Google Maps link works too, but the short maps.app.goo.gl share links don't carry coordinates — copy the numbers instead. We round to about a kilometre; that's all the sky calculation needs.

Know your what3words address? Paste it, e.g. ///filled.count.soap. This is optional — the three words are sent to what3words to convert them, and we don't store the address or the result.

Your location stays in your browser and is sent only for this calculation. Using a what3words address is optional; if you do, the three words go to what3words to be converted and we don't record them. Set a location first, then you can save an email alert for this object. See our privacy policy.

Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.

Orbital elements

Semi-major axis
2.723 AU
Eccentricity
0.0814
Inclination
6.61°
Orbital period
4.49 years
Perihelion
2.502 AU
Aphelion
2.945 AU
Longitude of ascending node
147.52°
Argument of periapsis
87.2°
Epoch · J2000
2461200.5
Orbit class · MBA
Main-belt asteroid
Earth MOID · 584.4 LD
1.5017 AU
Tisserand (Jupiter)
3.343

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
13,144
Data arc
159.9 years
First observed
19 May 1866
Last observed
5 April 2026
Residual RMS
0.27 ″
Solution · Otto Matic
5 June 2026

Physical properties

Mean radius
101 km
Rotation period
5.7 hours

Visual & observation

Geometric albedo
0.045
Absolute magnitude (H)
7.74
Colour index (B–V)
0.68
Spectral type (SMASS)
C
Spectral type (Tholen)
FC
Colour index (U–B)
0.27

Discovery & classification

Discovered by
Goldschmidt, H.
Discovery date
27 June 1857
Discovery site
Paris

Also known as 45 · A857 MA · 1941 BN

Main-Belt Asteroid Named

Sources