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136795 (1997 BQ)
Classification: Apollo [NEO, PHA]          SPK-ID: 2136795
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 75 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4786672176977811 3.0353e-08  
a 1.746886317253637 4.4093e-09 au
q .9107091041395153 5.4497e-08 au
i 10.98855043301918 7.2345e-06 deg
node 50.16553724042836 2.6857e-05 deg
peri 147.4687528469206 2.67e-05 deg
M 103.2467367038289 2.6395e-06 deg
tp 2458958.637117333803
(2020-Apr-19.13711733)
6.5571e-06 TDB
period 843.3258090238701
2.31
3.1929e-06
8.742e-09
d
yr
n .4268812790357876 1.6162e-09 deg/d
Q 2.583063530367759 6.5199e-09 au
  Orbit Determination Parameters
   # obs. used (total)      344  
   # delay obs. used      1  
   # Doppler obs. used      1  
   data-arc span      8576 days (23.48 yr)  
   first obs. used      1997-01-16  
   last obs. used      2020-07-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40577  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:18:57  

Additional Information
 Earth MOID = .0369675 au 
 Jupiter MOID = 2.38831 au 
 T_jup = 3.977 
[ 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 18.15   n/a E2021B55  
rotation period rot_per 17.71 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
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)

136795 (1997 BQ)          Discovered 1997-Jan-16 by Hasegawa, T. at Kiso
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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