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1972 Yi Xing (1964 VQ1)
Classification: Main-belt Asteroid          SPK-ID: 2001972
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1657692914455697 3.4271e-08  
a 2.421100856182458 7.2135e-09 au
q 2.01975668273483 8.2099e-08 au
i 4.123980244831063 3.7812e-06 deg
node 46.55905355856537 5.423e-05 deg
peri 32.87754081688951 5.5493e-05 deg
M 157.7608535780096 1.3127e-05 deg
tp 2457997.503910871978
4.9178e-05 TDB
period 1375.99782939021
n .2616283196896745 1.1693e-09 deg/d
Q 2.822445029630086 8.4093e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2028  
   data-arc span      25469 days (69.73 yr)  
   first obs. used      1949-11-26  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47275  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:21:28  

Additional Information
 Earth MOID = 1.03659 au 
 Jupiter MOID = 2.42371 au 
 T_jup = 3.491 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.38   n/a PDS3 (MPC 17264)  
magnitude slope G 0.21   n/a PDS3 (MPC 17264) Fit
diameter diameter 6.003 km 0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 14.183 h n/a LCDB (Rev. 2019-January); 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:
[Binzel, R.P.; Cochran, A.L.; Barker, E.S.; Tholen, D.J.; et al. (1987) Icarus 71, 148-158.]
geometric albedo albedo 0.243   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
B-V BV 0.888   0.041 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=17.08, mean=20.82, max.=27.41) deg.
U-B UB 0.467   0.018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=17.08, mean=17.52, max.=17.96) deg.

1972 Yi Xing (1964 VQ1)          Discovered 1964-Nov-09 by Purple Mountain Observatory at Nanking
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1964 VQ1 = 1949 WO = 1973 DK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2019-Dec-10 03:34 UT
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