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20676 (1999 VA7)
Classification: Outer Main-belt Asteroid          SPK-ID: 2020676
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08356994143581899 1.4977e-08  
a 3.226957264872407 2.0641e-08 au
q 2.957280635231129 5.5142e-08 au
i 23.47737726096525 1.0374e-06 deg
node 106.3561559311373 2.2661e-06 deg
peri 26.66428871097772 1.3353e-05 deg
M 160.1241597681815 1.5991e-05 deg
tp 2458258.734859494627
(2018-May-20.23485949)
9.1265e-05 TDB
period 2117.328522271531
5.80
2.0315e-05
5.562e-08
d
yr
n .170025575253566 1.6313e-09 deg/d
Q 3.496633894513685 2.2366e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1666  
   data-arc span      11131 days (30.48 yr)  
   first obs. used      1990-03-24  
   last obs. used      2020-09-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44265  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:26:25  

Additional Information
 Earth MOID = 1.9857 au 
 Jupiter MOID = 1.67536 au 
 T_jup = 3.052 
[ 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 12.82   n/a E2021B10  
diameter diameter 17.570 km 0.246 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.605 h n/a LCDB (Rev. 2020-October); 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 0.036   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20676 (1999 VA7)          Discovered 1999-Nov-08 by Juels, C. W. at Fountain Hills
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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