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20885 (2000 WD2)
Classification: Main-belt Asteroid          SPK-ID: 2020885
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2129173535868362 4.4508e-08  
a 2.692711863124611 1.5155e-08 au
q 2.11938677925624 1.2291e-07 au
i 9.639870956453914 4.6647e-06 deg
node 303.604579852394 2.0715e-05 deg
peri 30.59376977882541 2.2014e-05 deg
M 130.142986270454 7.3217e-06 deg
tp 2458017.052854366676
(2017-Sep-20.55285437)
3.2959e-05 TDB
period 1613.924641251924
4.42
1.3625e-05
3.73e-08
d
yr
n .2230587419005805 1.8831e-09 deg/d
Q 3.266036946992983 1.8382e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1860  
   data-arc span      12180 days (33.35 yr)  
   first obs. used      1986-08-02  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46636  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:47:24  

Additional Information
 Earth MOID = 1.11399 au 
 Jupiter MOID = 2.11887 au 
 T_jup = 3.318 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2   n/a MPO435893  
diameter diameter 6.749 km 0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.038 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
[Rowe, B. (2018) Minor Planet Bull. 45, 207-207.]
geometric albedo albedo 0.294   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20885 (2000 WD2)          Discovered 2000-Nov-18 by Juels, C. W. at Fountain Hills
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 WD2 = 1986 PB1 = 1998 FC96 = 1999 NU12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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