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85630 (1998 KP31)
Classification: Main-belt Asteroid          SPK-ID: 2085630
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1407506855570906 4.2591e-08  
a 2.58786816975108 1.5675e-08 au
q 2.223623950727242 1.1332e-07 au
i 5.228930018123504 5.4812e-06 deg
node 106.3635175045093 5.2048e-05 deg
peri 107.1255941044054 5.709e-05 deg
M 123.3862649575951 2.6917e-05 deg
tp 2458479.334129655918
(2018-Dec-26.83412966)
0.00011092 TDB
period 1520.588319845405
4.16
1.3815e-05
3.782e-08
d
yr
n .2367504703946434 2.151e-09 deg/d
Q 2.952112388774918 1.7881e-08 au
  Orbit Determination Parameters
   # obs. used (total)      789  
   data-arc span      8106 days (22.19 yr)  
   first obs. used      1998-05-22  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54184  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:56:34  

Additional Information
 Earth MOID = 1.22396 au 
 Jupiter MOID = 2.02921 au 
 T_jup = 3.401 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456958.5 (2014-Oct-28.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1395460601220432 4.2746e-08  
q 2.227312984936315 1.1357e-07 au
tp 2456957.671648064916
(2014-Oct-27.17164807)
0.00010442 TDB
node 106.3909134447264 5.2077e-05 deg
peri 107.2045915267215 5.7168e-05 deg
i 5.227003521280746 5.4782e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      789  
   data-arc span      8106 days (22.19 yr)  
   first obs. used      1998-05-22  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54184  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:56:34  

Additional Information
 Jupiter MOID = 2.02921 au 
 T_jup = 3.401 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.827237200725224E-15 -4.821591687736848E-15 -7.960323052002924E-13 6.344640059777371E-15 -1.402864114613592E-13 8.802920759969136E-16
q -4.821591687736848E-15 1.289767764723175E-14 2.722175640090303E-12 -1.995454545514793E-14 5.091361484458579E-13 -2.257132533401369E-15
tp -7.960323052002924E-13 2.722175640090303E-12 1.090438030687221E-8 -1.904486652195009E-11 2.483457022702202E-9 3.375464192594157E-12
node 6.344640059777371E-15 -1.995454545514793E-14 -1.904486652195009E-11 2.711965316254023E-9 -2.704230830173292E-9 3.30490802365651E-11
peri -1.402864114613592E-13 5.091361484458579E-13 2.483457022702202E-9 -2.704230830173292E-9 3.268236097106113E-9 -3.212032866709368E-11
i 8.802920759969136E-16 -2.257132533401369E-15 3.375464192594157E-12 3.30490802365651E-11 -3.212032866709368E-11 3.001112173966832E-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 15.1   n/a MPO439615  
diameter diameter 2.550 km 0.298 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.358   0.135 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85630 (1998 KP31)          Discovered 1998-May-22 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 KP31 = 2002 JN24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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