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101801 (1999 HS8)
Classification: Main-belt Asteroid          SPK-ID: 2101801
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1275048996006059 4.1694e-08  
a 2.634937647320756 1.0947e-08 au
q 2.298970187145267 1.1099e-07 au
i 1.460183001600892 3.2972e-06 deg
node 250.9111665611802 0.00017303 deg
peri 271.7844935384688 0.00017363 deg
M 8.128666329214147 1.3091e-05 deg
tp 2458965.224698309489
(2020-Apr-25.72469831)
5.6814e-05 TDB
period 1562.262257332911
4.28
9.7355e-06
2.665e-08
d
yr
n .2304350619175752 1.436e-09 deg/d
Q 2.970905107496245 1.2343e-08 au
  Orbit Determination Parameters
   # obs. used (total)      864  
   data-arc span      10080 days (27.60 yr)  
   first obs. used      1992-10-01  
   last obs. used      2020-05-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59312  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:58:26  

Additional Information
 Earth MOID = 1.3075 au 
 Jupiter MOID = 2.01203 au 
 T_jup = 3.386 
[ 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 MPO417514  

101801 (1999 HS8)          Discovered 1999-Apr-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 HS8 = 2001 WA20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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