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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1675353667912041 5.7859e-08  
a 2.546942236048448 1.2151e-08 au
q 2.120239334336062 1.4928e-07 au
i 5.859367318536165 4.6804e-06 deg
node 244.874524898589 5.661e-05 deg
peri 232.8722737924937 5.7718e-05 deg
M 165.4777101476835 1.4385e-05 deg
tp 2456718.060632528504
(2014-Mar-01.56063253)
5.6194e-05 JED
period 1484.660212366238
4.06
1.0625e-05
2.909e-08
d
yr
n .242479724991239 1.7353e-09 deg/d
Q 2.973645137760834 1.4187e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1315  
   data-arc span      30658 days (83.94 yr)  
   first obs. used      1931-10-07  
   last obs. used      2015-09-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51293  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-28 15:55:41  

Additional Information
 Earth MOID = 1.14243 au 
 Jupiter MOID = 2.16436 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 11.8 mag n/a MPO347532  
rotation period rot_per 15.9 h n/a LCDB (Rev. 2015-December); 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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