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1888 Zu Chong-Zhi (1964 VO1)
Classification: Main-belt Asteroid          SPK-ID: 2001888
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1677496880640178 3.8935e-08  
a 2.548260139459519 8.5045e-09 au
q 2.120790295959214 9.8872e-08 au
i 5.852175620826157 3.8402e-06 deg
node 244.797841059798 3.777e-05 deg
peri 233.5975558811069 3.9171e-05 deg
M 192.4609361599377 1.2612e-05 deg
tp 2459691.976861128694
(2022-Apr-22.47686113)
5.412e-05 TDB
period 1485.812707202228
4.07
7.438e-06
2.036e-08
d
yr
n .2422916416416149 1.2129e-09 deg/d
Q 2.975729982959824 9.9311e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2306  
   data-arc span      32397 days (88.70 yr)  
   first obs. used      1931-10-05  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4305  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:38:16  

Additional Information
 Earth MOID = 1.14312 au 
 Jupiter MOID = 2.15316 au 
 T_jup = 3.415 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.8   n/a MPO452187  
diameter diameter 11.633 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 11.053 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Foylan, M.; Rowe, B.; Smith, K.S. (2018) Minor Planet Bull. 45, 132-133.]
geometric albedo albedo 0.274   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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