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4015 Wilson-Harrington (1979 VA)
Classification: Apollo [NEO, PHA]          SPK-ID: 2004015
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 164 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6269774320219017 2.8887e-08  
a 2.639201040376726 2.9439e-09 au
q .984481549491795 7.6622e-08 au
i 2.768331725087962 4.9941e-06 deg
node 269.2164367729882 7.5317e-05 deg
peri 92.637169058353 7.5337e-05 deg
M 161.9121925978645 2.2569e-06 deg
tp 2456696.157019608843
(2014-Feb-07.65701961)
9.2553e-06 JED
period 1566.05545803819
4.29
2.6203e-06
7.174e-09
d
yr
n .2298769166520928 3.8462e-10 deg/d
Q 4.293920531261657 4.7896e-09 au
  Orbit Determination Parameters
   # obs. used (total)      903  
   data-arc span      23861 days (65.33 yr)  
   first obs. used      1949-11-19  
   last obs. used      2015-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .65406  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:16:32  

Additional Information
 Earth MOID = .045552 au 
 Jupiter MOID = 1.20552 au 
 T_jup = 3.080 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.99 mag n/a PDS3 (MPC 17270)  
diameter diameter 4 km 0.5 H. Campins et al. (1995) Planet. Space Sci., v.43, pp.733-736 based on ILM thermal model
rotation period rot_per 3.5736 h n/a LCDB (Rev. 2015-December); 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:
[Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.]
[Urakawa, S.; Okumura, S-i.; Nishiyama, K.; Sakamoto, T.; et al. (2011) Icarus 215, 17-26.]
[Urakawa, S.; Okumura, S-i.; Nishiyama, K.; Sakamoto, T.; et al. (2012) ACM 2012, #6088.]
geometric albedo albedo 0.05   0.01 H. Campins et al. (1995) Planet. Space Sci., v.43, pp.733-736 based on ILM thermal model
B-V BV .666 mag .018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=17.84, mean=18.14, max.=18.45) deg.
U-B UB .279 mag .028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=17.84, mean=18.14, max.=18.45) deg.
Tholen spectral type spec_T CF   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 6 color indices

4015 Wilson-Harrington (1979 VA)          Discovered 1979-Nov-15 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1979 VA = 107P 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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