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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1659923584301531 1.3709e-08  
a 2.419057897716281 5.8462e-09 au
q 2.017512772095268 3.5026e-08 au
i 4.119086408420809 9.5568e-07 deg
node 46.46190011931787 1.1531e-05 deg
peri 33.52789074808158 1.2248e-05 deg
M 314.1510601046374 8.5267e-06 deg
tp 2459375.522796602484
(2021-Jun-10.02279660)
3.281e-05 TDB
period 1374.25656777873
3.76
4.9818e-06
1.364e-08
d
yr
n .2619598177230352 9.4964e-10 deg/d
Q 2.820603023337294 6.8167e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2679  
   data-arc span      26034 days (71.28 yr)  
   first obs. used      1949-11-26  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43448  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:11:08  

Additional Information
 Earth MOID = 1.03417 au 
 Jupiter MOID = 2.42268 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 13.36   n/a E2021B10  
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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