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JPL Small-Body Database Browser
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20891 (2000 WN28)
Classification: Main-belt Asteroid          SPK-ID: 2020891
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1838402584829582 3.0348e-08  
a 2.671956445085459 1.1935e-08 au
q 2.180743281565742 8.1713e-08 au
i 15.47825772465427 4.5412e-06 deg
node 148.3708955557937 1.2804e-05 deg
peri 265.4193606189941 1.811e-05 deg
M 78.20815784682736 1.2923e-05 deg
tp 2458253.929139764233
(2018-May-15.42913976)
5.6724e-05 TDB
period 1595.300453556679
4.37
1.0689e-05
2.926e-08
d
yr
n .2256628205661133 1.512e-09 deg/d
Q 3.163169608605176 1.4129e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1977  
   data-arc span      13411 days (36.72 yr)  
   first obs. used      1982-08-19  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46586  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:56:20  

Additional Information
 Earth MOID = 1.25413 au 
 Jupiter MOID = 2.37381 au 
 T_jup = 3.305 
[ 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 13.4   n/a MPO337434  
diameter diameter 12.816 km 0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 20.417 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.089   0.001 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20891 (2000 WN28)          Discovered 2000-Nov-23 by JPL/GEODSS NEAT at Haleakala
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 WN28 = 1982 QC1 = 1991 RU24 = 1993 DT3 = 1998 HL112 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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