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85621 (1998 HS107)
Classification: Main-belt Asteroid          SPK-ID: 2085621
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1195829198669309 3.0114e-08  
a 2.518633637343399 1.3173e-08 au
q 2.217448072914806 7.3623e-08 au
i 5.337117468863402 3.3927e-06 deg
node 102.0310301346042 9.9144e-05 deg
peri 185.3381146620064 0.00010736 deg
M 123.7418809954916 4.3866e-05 deg
tp 2458498.665934930636
(2019-Jan-15.16593493)
0.0001782 TDB
period 1459.976702888114
4.00
1.1454e-05
3.136e-08
d
yr
n .2465792771130189 1.9346e-09 deg/d
Q 2.819819201771991 1.4749e-08 au
  Orbit Determination Parameters
   # obs. used (total)      623  
   data-arc span      7950 days (21.77 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65168  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:35:38  

Additional Information
 Earth MOID = 1.20112 au 
 Jupiter MOID = 2.319 au 
 T_jup = 3.441 
[ 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 15.7   n/a MPO302496  
diameter diameter 1.934 km 0.314 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.248   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85621 (1998 HS107)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 HS107 = 2002 GD87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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