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5917 Chibasai (1991 NG)
Classification: Main-belt Asteroid          SPK-ID: 2005917
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1387106168622975 7.1568e-08  
a 2.596864884140736 2.0854e-08 AU
q 2.236652154153536 1.8828e-07 AU
i 14.26435021434631 6.792e-06 deg
node 276.0180950898857 2.5742e-05 deg
peri 39.04226664104652 3.3914e-05 deg
M 193.1283113805736 2.5084e-05 deg
tp 2457709.020821295704
(2016-Nov-16.52082130)
0.0001102 JED
period 1528.52468730133
4.18
1.8412e-05
5.041e-08
d
yr
n .2355212205539146 2.837e-09 deg/d
Q 2.957077614127937 2.3747e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1025  
   data-arc span      23092 days (63.22 yr)  
   first obs. used      1952-02-01  
   last obs. used      2015-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48777  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 15:53:03  

Additional Information
 Earth MOID = 1.2399 AU 
 T_jup = 3.360 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.2 mag n/a MPO279576  
rotation period rot_per 2.65 h n/a LCDB (Rev. 2015-May); Warner et al., 2009 Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Stephens, R.D. (2005) Minor Planet Bul. 32, 2-3.]

5917 Chibasai           Discovered 1991 July 7 by E. F. Helin at Palomar.
The non-profit organization Chiba Science Association, or "Chiba Sai", was formed on 2001 July 7. Some 300 members, including educators, scientists and science-inclined citizens, have contributed to the popularization of science among children in Chiba. The name was suggested by Y. Yamada.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20091202/MPCPages.arcLast Updated: 2010-04-12

[ show close-approach data ]
Alternate Designations
 1991 NG = 1987 QD11 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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