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JPL Small-Body Database Browser
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99620 (2002 GP85)
Classification: Main-belt Asteroid          SPK-ID: 2099620
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1797034406956318 6.1746e-08  
a 2.331087646981029 1.129e-08 au
q 1.912183176255454 1.4764e-07 au
i 3.410714383548879 4.0542e-06 deg
node 86.93991091437944 0.00010064 deg
peri 246.3828245199673 0.00010115 deg
M 166.7973704983891 1.042e-05 deg
tp 2457998.185899478890
(2017-Sep-01.68589948)
3.7163e-05 TDB
period 1299.978983719614
3.56
9.4444e-06
2.586e-08
d
yr
n .2769275538362447 2.0119e-09 deg/d
Q 2.749992117706604 1.3319e-08 au
  Orbit Determination Parameters
   # obs. used (total)      593  
   data-arc span      9200 days (25.19 yr)  
   first obs. used      1994-01-16  
   last obs. used      2019-03-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58417  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:10:11  

Additional Information
 Earth MOID = .904064 au 
 Jupiter MOID = 2.60738 au 
 T_jup = 3.547 
[ 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 15.9   n/a MPO474872  
diameter diameter 1.999 km 0.226 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.90106 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.335   0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

99620 (2002 GP85)          Discovered 2002-Apr-10 by LINEAR at Socorro
Reference: 20050224/Numbers.arcLast Updated: 2005-02-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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