Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .167934792879878 6.5926e-08  
a 2.547118183236863 1.3589e-08 AU
q 2.119368418694409 1.7192e-07 AU
i 5.860086442675863 4.7826e-06 deg
node 244.886003163801 6.3526e-05 deg
peri 232.8637901173336 6.4471e-05 deg
M 19.95267071429059 1.3773e-05 deg
tp 2456718.205538892447
(2014-Mar-01.70553889)
5.6431e-05 JED
period 1484.814059378028
4.07
1.1883e-05
3.253e-08
d
yr
n .2424546007806525 1.9403e-09 deg/d
Q 2.974867947779317 1.5872e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1223  
   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      .51442  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:19:38  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Jul-23 03:57 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin