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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2134992591345458 9.651e-09  
a 2.691372661785004 1.3651e-08 au
q 2.116766592438935 3.2478e-08 au
i 9.641333201737307 4.4626e-07 deg
node 303.6083096290254 1.303e-06 deg
peri 30.62563613134681 4.2251e-06 deg
M 263.9932601460114 6.4503e-06 deg
tp 2459630.589067684724
(2022-Feb-20.08906768)
3.0475e-05 TDB
period 1612.720779832503
4.42
1.227e-05
3.359e-08
d
yr
n .2232252504599027 1.6983e-09 deg/d
Q 3.265978731131072 1.6565e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2128  
   data-arc span      12617 days (34.54 yr)  
   first obs. used      1986-08-02  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46607  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:34:04  

Additional Information
 Earth MOID = 1.11039 au 
 Jupiter MOID = 2.12255 au 
 T_jup = 3.319 
[ 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 13.19   n/a E2021B10  
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. 2020-October); 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, 203-207.]
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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