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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1427373829382743 4.5806e-08  
a 2.5274435403394 1.0461e-08 au
q 2.166682863867107 1.1408e-07 au
i 14.66958720022534 4.7832e-06 deg
node 157.6527287802637 1.3622e-05 deg
peri 352.2116285956299 1.9213e-05 deg
M 127.8766015136932 1.4636e-05 deg
tp 2458479.174214642617
(2018-Dec-26.67421464)
5.821e-05 TDB
period 1467.643654172037
4.02
9.1116e-06
2.495e-08
d
yr
n .2452911501893776 1.5228e-09 deg/d
Q 2.888204216811693 1.1954e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1160  
   data-arc span      7803 days (21.36 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50876  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:57:56  

Additional Information
 Earth MOID = 1.17807 au 
 Jupiter MOID = 2.10911 au 
 T_jup = 3.393 
[ 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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