 |
This gif animation shows 6 frames I took of the asteroid number 57
Mnemosyne over a period of 1 hour on 12/01/01. Over this time Mnemosyne has moved about 30
arcseconds. The total
size of each picture is about 8.5x6.5 arcminutes. The flashing stars are simply
some which don't appear on every frame.
Actual frame times 22:30, 22:40, 22:57, 23:09, 23:26, 23:35 |
| Some technical data from Guide
57 Mnemosyne
Period of orbit 5.59 years (2041.5 days)
Perihelion distance 2.77 AU
Aphelion distance 3.53 AU
Orbital elements:
Semimajor axis 3.1494351 AU
Eccentricity 0.1197989
Inclination of orbit 15.2024188 degrees
Argument of perihelion 213.5138966 degrees
Long. ascending node 199.3801618 degrees
Mean anomaly 39.2124532 degrees
Epoch of elements JD 2451900.5 (22 Dec 2000 0:00)
Right ascension: 06h47m22.839s
Declination: N 0° 18' 30.45" |
Dist from home planet: 1.97454 AU (295,387,007 km)
Heliocentric position: lon 105.87802 lat 7.36192
Heliocentric radius 2.89793 AU
99.50% illuminated
elongation from Sun 155.41 degrees (evening sky)
Speed of apparent motion: 29.804"/hour at position angle 282.5
Discovery date: 1859 Sep 22
Discoverer's name: R. Luther
Discovered at: Dusseldorf
Asteroid diameter 116.0 +/-3.0 km
Albedo 0.21 +/-0.01 |
