681 Gorgo is a minor planet orbiting the Sun.
![]() Modelled shape of Gorgo from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | August Kopff |
| Discovery site | Heidelberg |
| Discovery date | 13 May 1909 |
| Designations | |
MPC designation | (681) Gorgo |
| Pronunciation | /ˈɡɔːrɡoʊ/ |
Alternative designations | 1909 GZ |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 83.58 yr (30526 d) |
| Aphelion | 3.4247 AU (512.33 Gm) |
| Perihelion | 2.7859 AU (416.76 Gm) |
Semi-major axis | 3.1053 AU (464.55 Gm) |
| Eccentricity | 0.10287 |
Orbital period (sidereal) | 5.47 yr (1998.7 d) |
Mean anomaly | 145.868° |
Mean motion | 0° 10m 48.396s / day |
| Inclination | 12.580° |
Longitude of ascending node | 177.985° |
Argument of perihelion | 117.024° |
| Physical characteristics | |
Synodic rotation period | 6.4606 h (0.26919 d) |
Absolute magnitude (H) | 10.8 |
'Gorgo' is German for Gorgon. However, Ingrid van Houten-Groeneveld and Antonio Paluzie-Borrell suggest it may refer to "King of Salamine, in the 5th century B.C., who accompanied Xerxes in Greece."[2]
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