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13138 (1994 VA)
Classification: Main-belt Asteroid          SPK-ID: 2013138
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2489372805544094 5.8613e-08  
a 2.543201633664365 9.5866e-09 au
q 1.910103935078427 1.5163e-07 au
i 12.0043291854764 4.3293e-06 deg
node 232.0211739056526 2.4896e-05 deg
peri 90.47308187609521 2.6193e-05 deg
M 163.8552358875075 8.0682e-06 deg
tp 2458326.239931318840
(2018-Jul-26.73993132)
3.3381e-05 TDB
period 1481.390713030758
4.06
8.3761e-06
2.293e-08
d
yr
n .2430148892073724 1.3741e-09 deg/d
Q 3.176299332250303 1.1973e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1971  
   data-arc span      14151 days (38.74 yr)  
   first obs. used      1981-05-08  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4713  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:33:43  

Additional Information
 Earth MOID = .943578 au 
 Jupiter MOID = 2.31203 au 
 T_jup = 3.371 
[ 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 13.7   n/a MPO502268  
diameter diameter 7.072 km 0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 57. h n/a LCDB (Rev. 2019-August); 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:
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.156   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

13138 (1994 VA)          Discovered 1994-Nov-01 by Kobayashi, T. at Oizumi
Reference: 20000124/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 VA = 1981 JW3 = 1998 VO9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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