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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .165914374061894 2.631e-08  
a 2.419730463317475 6.1198e-09 au
q 2.018262398097659 6.5315e-08 au
i 4.11880502707267 3.1495e-06 deg
node 46.47083461367424 5.0667e-05 deg
peri 33.41619963261849 5.1933e-05 deg
M 261.8608414919769 1.2508e-05 deg
tp 2459375.290646684426
(2021-Jun-09.79064668)
4.8152e-05 TDB
period 1374.829730126155
3.76
5.2157e-06
1.428e-08
d
yr
n .2618506074690182 9.9339e-10 deg/d
Q 2.821198528537291 7.1352e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2433  
   data-arc span      25900 days (70.91 yr)  
   first obs. used      1949-11-26  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44409  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:13:45  

Additional Information
 Earth MOID = 1.03531 au 
 Jupiter MOID = 2.42238 au 
 T_jup = 3.492 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456983.5 (2014-Nov-22.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1668364239065591 2.6304e-08  
q 2.015447111066571 6.5382e-08 au
tp 2456622.878802541072
(2013-Nov-26.37880254)
4.5568e-05 TDB
node 46.56715087287624 5.0511e-05 deg
peri 32.70543615621607 5.1779e-05 deg
i 4.126596603223375 3.1548e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2433  
   data-arc span      25900 days (70.91 yr)  
   first obs. used      1949-11-26  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44409  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:13:45  

Additional Information
 Jupiter MOID = 2.42238 au 
 T_jup = 3.492 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.918863105648864E-16 -1.715099816067988E-15 -3.56353801456392E-14 -1.569299052829247E-15 2.276655364723201E-15 -3.514268828324712E-16
q -1.715099816067988E-15 4.274812104080651E-15 1.120888763287411E-13 4.2310508547645E-15 1.45981325192726E-15 9.535788433715925E-16
tp -3.56353801456392E-14 1.120888763287411E-13 2.076423816230663E-9 1.684242695163893E-11 5.350052228125211E-10 7.191970473254905E-13
node -1.569299052829247E-15 4.2310508547645E-15 1.684242695163893E-11 2.551365984168235E-9 -2.53994100459063E-9 -3.987247219275007E-11
peri 2.276655364723201E-15 1.45981325192726E-15 5.350052228125211E-10 -2.53994100459063E-9 2.681037659631496E-9 3.996768013426176E-11
i -3.514268828324712E-16 9.535788433715925E-16 7.191970473254905E-13 -3.987247219275007E-11 3.996768013426176E-11 9.953030520636062E-12

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. 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:
[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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