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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2660728738805375 2.7334e-08  
a 2.352056422137053 6.4286e-09 au
q 1.726238010369872 6.2738e-08 au
i 7.997641204350905 3.6265e-06 deg
node 177.4872673583429 1.8976e-05 deg
peri 64.10095108090395 2.0715e-05 deg
M 86.27008085469141 6.4494e-06 deg
tp 2458884.761359594966
(2020-Feb-05.26135960)		 2.3325e-05 TDB
period 1317.55887347857
3.61		 5.4017e-06
1.479e-08		 d
yr
n .2732325721806582 1.1202e-09 deg/d
Q 2.977874833904234 8.1391e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1094  
   data-arc span      8266 days (22.63 yr)  
   first obs. used      1998-04-23  
   last obs. used      2020-12-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49937  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:26:28  

Additional Information
 Earth MOID = .731343 au 
 Jupiter MOID = 2.07371 au 
 T_jup = 3.496 
[ 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 15.68   n/a E2021B55  
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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