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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .165914372231177 2.617e-08  
a 2.419730462969747 6.0984e-09 au
q 2.018262402237466 6.5027e-08 au
i 4.118804914057907 3.1421e-06 deg
node 46.47083118297682 5.0242e-05 deg
peri 33.41620275905788 5.1524e-05 deg
M 261.86084205419 1.2483e-05 deg
tp 2459375.290644456561
(2021-Jun-09.79064446)
4.8049e-05 TDB
period 1374.829729829799
3.76
5.1974e-06
1.423e-08
d
yr
n .2618506075254622 9.899e-10 deg/d
Q 2.821198523702027 7.1102e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2465  
   data-arc span      25923 days (70.97 yr)  
   first obs. used      1949-11-26  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44244  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:03:45  

Additional Information
 Earth MOID = 1.03531 au 
 Jupiter MOID = 2.42238 au 
 T_jup = 3.492 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3   n/a MPO492773  
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] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 14.183 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:
[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] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
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 ]
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