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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .167934813300061 8.8822e-08  
a 2.547118185752588 1.4603e-08 AU
q 2.119368368775037 2.301e-07 AU
i 5.860091550635868 6.1399e-06 deg
node 244.8860795518875 7.899e-05 deg
peri 232.863734153849 8.0921e-05 deg
M 19.95265541537588 1.739e-05 deg
tp 2456718.205601870649
(2014-Mar-01.70560187)
7.1441e-05 JED
period 1484.814061577799
4.07
1.2769e-05
3.496e-08
d
yr
n .242454600421453 2.085e-09 deg/d
Q 2.97486800273014 1.7055e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1159  
   data-arc span      30135 days (82.51 yr)  
   first obs. used      1931-10-07  
   last obs. used      2014-04-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52243  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:39:49  

Additional Information
 Earth MOID = 1.14142 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 Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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 (330)
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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