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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1384399894923014 7.8125e-08  
a 2.597167013483748 2.1905e-08 AU
q 2.237615239427306 2.0246e-07 AU
i 14.27652060698554 7.6834e-06 deg
node 276.0485754992712 2.6415e-05 deg
peri 38.73801153310833 3.5783e-05 deg
M 146.3911214555821 2.5357e-05 deg
tp 2456178.829182307026
(2012-Sep-08.32918231)
0.0001056 JED
period 1528.791446804896
4.19
1.9342e-05
5.296e-08
d
yr
n .2354801243507632 2.9792e-09 deg/d
Q 2.95671878754019 2.4938e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      955  
   data-arc span      22693 days (62.13 yr)  
   first obs. used      1952-02-01  
   last obs. used      2014-03-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49543  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:33:02  

Additional Information
 Earth MOID = 1.2387 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 Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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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