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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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1677496860634374 3.8029e-08  
a 2.548260139004411 8.3158e-09 au
q 2.12079030067845 9.687e-08 au
i 5.85217553899724 3.5889e-06 deg
node 244.7978407040633 3.7692e-05 deg
peri 233.5975568781288 3.901e-05 deg
M 192.4609358812599 1.2561e-05 deg
tp 2459691.976862093627
(2022-Apr-22.47686209)
5.3978e-05 TDB
period 1485.812706804189
4.07
7.273e-06
1.991e-08
d
yr
n .2422916417065233 1.186e-09 deg/d
Q 2.975729977330372 9.7108e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2405  
   data-arc span      32444 days (88.83 yr)  
   first obs. used      1931-10-05  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42397  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:42:47  

Additional Information
 Earth MOID = 1.14312 au 
 Jupiter MOID = 2.15316 au 
 T_jup = 3.415 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456621.5 (2013-Nov-25.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1680774770879447 3.778e-08  
q 2.119338157577417 9.6397e-08 au
tp 2456718.483428210572
(2014-Mar-01.98342821)
4.5783e-05 TDB
node 244.9003153051895 3.7576e-05 deg
peri 232.9448748596078 3.8923e-05 deg
i 5.861308852618921 3.5932e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2405  
   data-arc span      32444 days (88.83 yr)  
   first obs. used      1931-10-05  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42397  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:42:47  

Additional Information
 Jupiter MOID = 2.15316 au 
 T_jup = 3.415 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.427357203594465E-15 -3.632925686869071E-15 3.98764980712141E-14 8.742996578547121E-15 -5.219842576814408E-15 9.997613195086576E-17
q -3.632925686869071E-15 9.292364289260363E-15 4.781461741600877E-14 -2.33056752953503E-14 4.564406450087323E-14 -1.132523659008516E-16
tp 3.98764980712141E-14 4.781461741600877E-14 2.096076714681556E-9 -4.63738880007834E-12 4.827835203883487E-10 1.308969555775224E-12
node 8.742996578547121E-15 -2.33056752953503E-14 -4.63738880007834E-12 1.411993223680575E-9 -1.405363553050699E-9 3.530500308227555E-11
peri -5.219842576814408E-15 4.564406450087323E-14 4.827835203883487E-10 -1.405363553050699E-9 1.514967620071483E-9 -3.481927051645944E-11
i 9.997613195086576E-17 -1.132523659008516E-16 1.308969555775224E-12 3.530500308227555E-11 -3.481927051645944E-11 1.291136318274201E-11

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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