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30882 Tomhenning (1992 SG2)
Classification: Main-belt Asteroid          SPK-ID: 2030882
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1594614737041269 1.5954e-08  
a 2.603049194275307 1.0048e-08 au
q 2.187963133631827 4.3987e-08 au
i 13.1368794222106 1.1604e-06 deg
node 170.2224431774992 5.9767e-06 deg
peri 120.8501263574005 8.6277e-06 deg
M 314.4662991483055 8.2928e-06 deg
tp 2459394.522653486178
(2021-Jun-29.02265349)
3.5774e-05 TDB
period 1533.988099990445
4.20
8.8823e-06
2.432e-08
d
yr
n .2346823942129944 1.3589e-09 deg/d
Q 3.018135254918788 1.1651e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2236  
   data-arc span      10374 days (28.40 yr)  
   first obs. used      1992-09-21  
   last obs. used      2021-02-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43922  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:41:34  

Additional Information
 Earth MOID = 1.20293 au 
 Jupiter MOID = 2.31912 au 
 T_jup = 3.359 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4   n/a MPO365619  
rotation period rot_per 9.91871 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

30882 Tomhenning           Discovered 1992 Sept. 21 by L. D. Schmadel and F. Börngen at Tautenburg.
Thomas Henning (b. 1956), managing director of the Heidelberg Max-Planck-Institute for Astronomy, is a leading expert in the fields of the formation of stars and planets, as well as in laboratory astrophysics. The name was suggested by the first discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20091004/MPCPages.arcLast Updated: 2009-10-06

Alternate Designations
 1992 SG2 = 1999 FR23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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