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1888 Zu Chong-Zhi (1964 VO1)
Classification: Main-belt Asteroid          SPK-ID: 2001888
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1677482198589625 6.3976e-08  
a 2.546432176901462 1.3029e-08 AU
q 2.119272712234658 1.6633e-07 AU
i 5.860251783740819 4.7471e-06 deg
node 244.8775902937648 6.1795e-05 deg
peri 232.8173472148791 6.2783e-05 deg
M 68.51348773075453 1.3922e-05 deg
tp 2456718.031403277837
(2014-Mar-01.53140328)
5.6129e-05 JED
period 1484.214250186715
4.06
1.1391e-05
3.119e-08
d
yr
n .2425525829271022 1.8616e-09 deg/d
Q 2.973591641568265 1.5215e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1241  
   data-arc span      30482 days (83.46 yr)  
   first obs. used      1931-10-07  
   last obs. used      2015-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51499  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:07:40  

Additional Information
 Earth MOID = 1.14156 AU 
 T_jup = 3.415 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.7 mag n/a PDS3 (MPC 17263)  
rotation period rot_per 15.9 h n/a LCDB (Rev. 2015-Feb); 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:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1888 Zu Chong-Zhi (1964 VO1)          Discovered 1964-Nov-09 by Purple Mountain Observatory at Nanking
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1964 VO1 = 1931 TR = 1941 CB = 1941 DD = 1968 UU1 = 1972 TR4 = 1972 VT 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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