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100891 (1998 HJ124)
Classification: Main-belt Asteroid          SPK-ID: 2100891
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2660618997051057 3.1129e-08  
a 2.352904825356428 6.7976e-09 au
q 1.726886497696787 7.2709e-08 au
i 7.995418235574464 3.9888e-06 deg
node 177.4970361640446 2.2645e-05 deg
peri 64.17276754587816 2.41e-05 deg
M 31.56724590646797 6.651e-06 deg
tp 2458884.904970518608
(2020-Feb-05.40497052)
2.4222e-05 TDB
period 1318.27181682564
3.61
5.7128e-06
1.564e-08
d
yr
n .2730848034564445 1.1834e-09 deg/d
Q 2.978923153016069 8.6062e-09 au
  Orbit Determination Parameters
   # obs. used (total)      901  
   data-arc span      8136 days (22.28 yr)  
   first obs. used      1998-04-23  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52546  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 09:04:26  

Additional Information
 Earth MOID = .733314 au 
 Jupiter MOID = 2.07405 au 
 T_jup = 3.495 
[ 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 15.6   n/a MPO325158  
diameter diameter 1.859 km 0.390 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.294   0.166 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

100891 (1998 HJ124)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 HJ124 = 2002 LO56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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