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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1193728879215708 3.0122e-08  
a 2.519202787967526 1.2628e-08 au
q 2.21847827590777 7.3619e-08 au
i 5.336627170158986 3.3382e-06 deg
node 102.0304337619122 6.5237e-05 deg
peri 185.459001930861 7.0165e-05 deg
M 221.2218099275561 2.802e-05 deg
tp 2459959.504463127908
(2023-Jan-15.00446313)
0.00011497 TDB
period 1460.471610274242
4.00
1.0982e-05
3.007e-08
d
yr
n .2464957192371582 1.8534e-09 deg/d
Q 2.819927300027282 1.4136e-08 au
  Orbit Determination Parameters
   # obs. used (total)      684  
   data-arc span      8382 days (22.95 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-04-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .63071  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:10:12  

Additional Information
 Earth MOID = 1.20184 au 
 Jupiter MOID = 2.31713 au 
 T_jup = 3.441 
[ 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 15.77   n/a MPCxxxxx  
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

Alternate Designations
 1998 HS107 = 2002 GD87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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