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39556 (1992 GF2)
Classification: Main-belt Asteroid          SPK-ID: 2039556
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1174843330513804 3.8536e-08  
a 2.206472507925674 5.966e-09 au
q 1.947246556935819 8.6218e-08 au
i 2.128700542657724 4.4205e-06 deg
node 36.36781012510089 8.2838e-05 deg
peri 300.6494251846353 8.4533e-05 deg
M 89.66802959378057 1.5729e-05 deg
tp 2458702.318061693599
(2019-Aug-06.81806169)
5.2592e-05 TDB
period 1197.143488895734
3.28
4.8554e-06
1.329e-08
d
yr
n .300715831760544 1.2196e-09 deg/d
Q 2.465698458915528 6.6669e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1754  
   data-arc span      11938 days (32.68 yr)  
   first obs. used      1988-02-16  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50531  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 00:20:45  

Additional Information
 Earth MOID = .938866 au 
 Jupiter MOID = 2.85435 au 
 T_jup = 3.651 
[ 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 14.7   n/a MPO337578  
rotation period rot_per 2.561 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

39556 (1992 GF2)          Discovered 1992-Apr-04 by Elst, E. W. at La Silla
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1992 GF2 = 1988 DS3 = 1995 EH9 = 1998 BL41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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