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85731 (1998 SP80)
Classification: Main-belt Asteroid          SPK-ID: 2085731
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 .1817336891614531 3.4413e-08  
a 2.279179616683433 9.5211e-09 au
q 1.864975896681966 8.065e-08 au
i 4.594830666011783 3.6061e-06 deg
node 243.7477206888481 4.8415e-05 deg
peri 128.3400408078928 4.9853e-05 deg
M 214.3765537648717 1.4703e-05 deg
tp 2459904.887728575445
(2022-Nov-21.38772858)
5.3611e-05 TDB
period 1256.800240750044
3.44
7.8752e-06
2.156e-08
d
yr
n .2864417019725873 1.7949e-09 deg/d
Q 2.6933833366849 1.1251e-08 au
  Orbit Determination Parameters
   # obs. used (total)      867  
   data-arc span      8295 days (22.71 yr)  
   first obs. used      1998-08-27  
   last obs. used      2021-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49027  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:26:52  

Additional Information
 Earth MOID = .868896 au 
 Jupiter MOID = 2.79032 au 
 T_jup = 3.580 
[ 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 15.72   n/a E2021B10  
diameter diameter 2.721 km 0.949 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.104   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85731 (1998 SP80)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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