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3960 Chaliubieju (1955 BG)
Classification: Main-belt Asteroid          SPK-ID: 2003960
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2785657819160609 3.7059e-08  
a 2.64176796063661 8.6177e-09 au
q 1.905861803041075 9.7349e-08 au
i 14.41378779696391 5.1268e-06 deg
node 84.83153816689008 1.8452e-05 deg
peri 12.49759096549622 2.0688e-05 deg
M 86.77455618232551 9.044e-06 deg
tp 2458622.466462448094
(2019-May-18.96646245)
3.8879e-05 TDB
period 1568.340761463968
4.29
7.6741e-06
2.101e-08
d
yr
n .2295419521354262 1.1232e-09 deg/d
Q 3.377674118232144 1.1018e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2237  
   data-arc span      23947 days (65.56 yr)  
   first obs. used      1955-01-20  
   last obs. used      2020-08-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38532  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:55:38  

Additional Information
 Earth MOID = .924897 au 
 Jupiter MOID = 1.85062 au 
 T_jup = 3.295 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.4   n/a MPO502191  
diameter diameter 8.997 km 0.259 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.986 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Linder, T.; Sampson, R.; Holmes, R. (2013) Minor Planet Bull. 40, 4-6.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.288   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3960 Chaliubieju           Discovered 1955 Jan. 20 at the Purple Mountain Observatory.
Named in honor of Cha Liubieju, a friend of the discoverer. She devotes her every effort to caring for and educating sick and destitute mothers and children in China.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19981005/MPCPages.arcLast Updated: 2009-11-17

[ show close-approach data ]
Alternate Designations
 1955 BG = 1984 YZ3 = A921 EF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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