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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1174843324686684 3.8487e-08  
a 2.206472508017856 5.9579e-09 au
q 1.947246558302909 8.6098e-08 au
i 2.128700405392069 4.4107e-06 deg
node 36.36781109250899 8.2813e-05 deg
peri 300.6494238166223 8.4498e-05 deg
M 89.6680299231288 1.5692e-05 deg
tp 2458702.318060579699
(2019-Aug-06.81806058)
5.2465e-05 TDB
period 1197.143488970755
3.28
4.8487e-06
1.328e-08
d
yr
n .300715831741699 1.218e-09 deg/d
Q 2.465698457732802 6.6578e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1758  
   data-arc span      11960 days (32.74 yr)  
   first obs. used      1988-02-16  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50485  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:11:02  

Additional Information
 Earth MOID = .938866 au 
 Jupiter MOID = 2.85435 au 
 T_jup = 3.651 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457002.5 (2014-Dec-11.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1180120762602264 3.8588e-08  
q 1.945825443454464 8.6381e-08 au
tp 2457505.797833184079
(2016-Apr-27.29783318)
5.3537e-05 TDB
node 36.38681102394835 8.2735e-05 deg
peri 300.7823574274333 8.4403e-05 deg
i 2.130373764865177 4.4127e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1758  
   data-arc span      11960 days (32.74 yr)  
   first obs. used      1988-02-16  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50485  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:11:02  

Additional Information
 Jupiter MOID = 2.85435 au 
 T_jup = 3.651 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.489006727174172E-15 -3.327239228443943E-15 1.103619423163012E-12 -8.595579599472794E-16 3.373250709153778E-13 -1.27019714729032E-15
q -3.327239228443943E-15 7.461691221714157E-15 -2.53200072633327E-12 1.912887285395775E-15 -7.776515433999666E-13 2.851087750787653E-15
tp 1.103619423163012E-12 -2.53200072633327E-12 2.86623449253655E-9 7.7831092641351E-13 9.003306536847003E-10 -1.625289699735639E-12
node -8.595579599472794E-16 1.912887285395775E-15 7.7831092641351E-13 6.845086352088678E-9 -6.839639698010842E-9 -1.307475129380691E-10
peri 3.373250709153778E-13 -7.776515433999666E-13 9.003306536847003E-10 -6.839639698010842E-9 7.123944577863073E-9 1.30168915127635E-10
i -1.27019714729032E-15 2.851087750787653E-15 -1.625289699735639E-12 -1.307475129380691E-10 1.30168915127635E-10 1.947172032412355E-11

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. 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:
[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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