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85680 (1998 RS21)
Classification: Main-belt Asteroid          SPK-ID: 2085680
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 .09702623697118469 4.0639e-08  
a 3.009283885117525 1.9164e-08 au
q 2.717304393766544 1.2579e-07 au
i 1.178662477864735 4.7988e-06 deg
node 223.5127535986696 0.00023414 deg
peri 191.473885768144 0.0002361 deg
M 289.5611613676102 2.8673e-05 deg
tp 2458973.580759477468
(2020-May-04.08075948)
0.00015186 TDB
period 1906.747414062688
5.22
1.8214e-05
4.987e-08
d
yr
n .1888031929897581 1.8035e-09 deg/d
Q 3.301263376468505 2.1024e-08 au
  Orbit Determination Parameters
   # obs. used (total)      629  
   data-arc span      9512 days (26.04 yr)  
   first obs. used      1993-10-12  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54376  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:13:30  

Additional Information
 Earth MOID = 1.72837 au 
 Jupiter MOID = 2.00594 au 
 T_jup = 3.243 
[ 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 15.3   n/a MPO410592  
diameter diameter 5.608 km 0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85680 (1998 RS21)          Discovered 1998-Sep-15 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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