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85981 (1999 HS3)
Classification: Main-belt Asteroid          SPK-ID: 2085981
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1424946303106752 5.8316e-08  
a 2.525428703449677 1.1365e-08 au
q 2.165568673975647 1.4795e-07 au
i 14.66530351429111 6.636e-06 deg
node 157.7134512718868 1.7315e-05 deg
peri 351.8031455048224 2.7224e-05 deg
M 30.0844052116483 1.9639e-05 deg
tp 2458477.998889947726
(2018-Dec-25.49888995)
7.9881e-05 TDB
period 1465.889031495407
4.01
9.8955e-06
2.709e-08
d
yr
n .2455847559161766 1.6578e-09 deg/d
Q 2.885288732923706 1.2985e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1077  
   data-arc span      7358 days (20.15 yr)  
   first obs. used      1999-03-20  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5179  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:56:16  

Additional Information
 Earth MOID = 1.17757 au 
 Jupiter MOID = 2.11417 au 
 T_jup = 3.395 
[ 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 15.0   n/a MPO325055  
diameter diameter 2.870 km 0.326 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.258   0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85981 (1999 HS3)          Discovered 1999-Apr-18 by CSS at Catalina
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1999 HS3 = 1999 GK49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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