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79837 (1998 WB21)
Classification: Main-belt Asteroid          SPK-ID: 2079837
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2192534209971459 4.7414e-08  
a 2.391861406703975 7.0392e-09 au
q 1.867437610733082 1.124e-07 au
i 3.382209727257474 5.2113e-06 deg
node 24.55159275231421 5.5643e-05 deg
peri 324.8076749759734 5.6246e-05 deg
M 85.83495625577181 7.4734e-06 deg
tp 2459074.345551013371
(2020-Aug-12.84555101)
2.7866e-05 TDB
period 1351.146510631415
3.70
5.9646e-06
1.633e-08
d
yr
n .2664403876022042 1.1762e-09 deg/d
Q 2.916285202674867 8.5826e-09 au
  Orbit Determination Parameters
   # obs. used (total)      917  
   data-arc span      10158 days (27.81 yr)  
   first obs. used      1993-03-21  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50647  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:02:43  

Additional Information
 Earth MOID = .861798 au 
 Jupiter MOID = 2.51374 au 
 T_jup = 3.496 
[ 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 15.96   n/a MPO637111  
diameter diameter 1.854 km 0.284 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.270   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79837 (1998 WB21)          Discovered 1998-Nov-18 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 1998 WB21 = 1997 HW10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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