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18523 (1996 VA7)
Classification: Main-belt Asteroid          SPK-ID: 2018523
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09082944629089243 3.8089e-08  
a 2.578749311201274 9.93e-09 au
q 2.344522939141843 9.5072e-08 au
i 3.893283439088259 3.688e-06 deg
node 209.4093146124075 4.8982e-05 deg
peri 324.4227366703116 5.2271e-05 deg
M 215.8026679499631 1.8888e-05 deg
tp 2460002.352408443698
(2023-Feb-26.85240844)
8.0523e-05 TDB
period 1512.55826955278
4.14
8.7366e-06
2.392e-08
d
yr
n .2380073596149401 1.3747e-09 deg/d
Q 2.812975683260706 1.0832e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1644  
   data-arc span      9768 days (26.74 yr)  
   first obs. used      1994-03-12  
   last obs. used      2020-12-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50377  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:30:54  

Additional Information
 Earth MOID = 1.35111 au 
 Jupiter MOID = 2.1555 au 
 T_jup = 3.417 
[ 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 14.39   n/a E2021B10  
diameter diameter 3.768 km 0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.413 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 0.197   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18523 (1996 VA7)          Discovered 1996-Nov-02 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20001111/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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