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85451 (1997 GC18)
Classification: Main-belt Asteroid          SPK-ID: 2085451
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1511386452291835 4.6354e-08  
a 2.631471815352472 1.5545e-08 au
q 2.233754730221319 1.2554e-07 au
i 6.583877494889927 5.7501e-06 deg
node 186.1857403537194 3.6765e-05 deg
peri 20.64389421247053 4.0809e-05 deg
M 143.7046458741515 1.7752e-05 deg
tp 2458378.106828587433
(2018-Sep-16.60682859)
7.5054e-05 TDB
period 1559.180918233811
4.27
1.3816e-05
3.783e-08
d
yr
n .2308904603628656 2.0459e-09 deg/d
Q 3.029188900483624 1.7894e-08 au
  Orbit Determination Parameters
   # obs. used (total)      481  
   data-arc span      21517 days (58.91 yr)  
   first obs. used      1960-09-26  
   last obs. used      2019-08-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52344  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:53:50  

Additional Information
 Earth MOID = 1.23114 au 
 Jupiter MOID = 1.93057 au 
 T_jup = 3.374 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO436373  
diameter diameter 2.077 km 0.292 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.215   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85451 (1997 GC18)          Discovered 1997-Apr-03 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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