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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1394131807954889 7.1279e-08  
a 2.594819160014905 2.0423e-08 au
q 2.233067167328148 1.8783e-07 au
i 14.26061917447544 6.7625e-06 deg
node 275.9682142478213 2.5647e-05 deg
peri 39.39765059124804 3.3722e-05 deg
M 334.2564384473353 2.5681e-05 deg
tp 2457709.675502727521
(2016-Nov-17.17550273)
0.0001095 JED
period 1526.718861393875
4.18
1.8024e-05
4.935e-08
d
yr
n .2357997985767494 2.7838e-09 deg/d
Q 2.956571152701662 2.327e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1027  
   data-arc span      23372 days (63.99 yr)  
   first obs. used      1952-02-01  
   last obs. used      2016-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49138  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:15:47  

Additional Information
 Earth MOID = 1.23521 au 
 Jupiter MOID = 2.2997 au 
 T_jup = 3.361 
[ 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. 2016-February); 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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