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Discovery and designation
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| Discovered by | C.J. van Houten, I. van Houten-Groeneveld & T. Gehrels | |||||||||
| Discovery date | September 24, 1960 | |||||||||
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Designations
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| Named after | Hugo Grotius | |||||||||
| Alternate name(s) | 4028 P-L, 1981 WH9 | |||||||||
| Epoch October 27, 2007 | ||||||||||
| Ap | 3.0404076 AU | |||||||||
| Peri | 2.1284272 AU | |||||||||
| Semi-major axis | 2.5844174 AU | |||||||||
| Eccentricity | 0.1764383 | |||||||||
| Orbital period | 1517.5479124 d | |||||||||
| Mean anomaly | 70.85615° | |||||||||
| Inclination | 7.16682° | |||||||||
| Longitude of ascending node | 207.32831° | |||||||||
| Argument of peri | 224.17255° | |||||||||
| Surface temp. Kelvin Celsius |
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| Absolute magnitude (H) | 14.3 | |||||||||
9994 Grotius is a main belt asteroid. It orbits the Sun once every 4.15 years.[1]
Discovered on September 24, 1960 by C. J. van Houten and I. van Houten-Groeneveld on photographic plates made by T. Gehrels, it was given the provisional designation 4028 P-L. It was later renamed 9994 Grotius, to honour Hugo Grotius.[2]
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