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21299 (1996 WC)
Classification: Main-belt Asteroid          SPK-ID: 2021299
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2499239767146648 3.711e-08  
a 2.620934160672008 9.0351e-09 au
q 1.965899872529548 9.7809e-08 au
i 4.636687887076536 5.2567e-06 deg
node 36.30440602985684 4.1824e-05 deg
peri 44.31623501898346 4.2924e-05 deg
M 240.4740689493081 9.0576e-06 deg
tp 2459715.067352734073
(2022-May-15.56735273)
4.0075e-05 TDB
period 1549.824756484873
4.24
8.0141e-06
2.194e-08
d
yr
n .2322843266592985 1.2011e-09 deg/d
Q 3.275968448814469 1.1293e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1081  
   data-arc span      9616 days (26.33 yr)  
   first obs. used      1993-01-28  
   last obs. used      2019-05-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4949  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:43:03  

Additional Information
 Earth MOID = .984263 au 
 Jupiter MOID = 2.00694 au 
 T_jup = 3.355 
[ 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 14.8   n/a MPO435897  
diameter diameter 2.724 km 0.451 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.261   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21299 (1996 WC)          Discovered 1996-Nov-16 by Kobayashi, T. at Oizumi
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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