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120681 (1997 BB6)
Classification: Main-belt Asteroid          SPK-ID: 2120681
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01732885524197205 4.609e-08  
a 2.735704887335892 2.1793e-08 au
q 2.688298253358493 1.3097e-07 au
i 9.797986560551994 6.8004e-06 deg
node 312.3645205536131 2.8267e-05 deg
peri 307.1049260192764 0.00020963 deg
M 295.4561518299757 0.00020651 deg
tp 2459296.815691610698
(2021-Mar-23.31569161)		 0.00094722 TDB
period 1652.731468673
4.52		 1.9749e-05
5.407e-08		 d
yr
n .2178212291734535 2.6028e-09 deg/d
Q 2.783111521313292 2.2171e-08 au
   Orbit Determination Parameters
   # obs. used (total)      492  
   data-arc span      8514 days (23.31 yr)  
   first obs. used      1997-01-31  
   last obs. used      2020-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56145  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:55:31  

Additional Information
 Earth MOID = 1.68133 au 
 Jupiter MOID = 2.28324 au 
 T_jup = 3.331 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457283.5 (2015-Sep-18.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01732544531677525 4.4739e-08  
q 2.68971415558352 1.2662e-07 au
tp 2457622.501808206062
(2016-Aug-22.00180821)		 0.00096644 TDB
node 312.3986029637716 2.8257e-05 deg
peri 302.4630971830092 0.00021265 deg
i 9.798444252391773 6.8007e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      492  
   data-arc span      8514 days (23.31 yr)  
   first obs. used      1997-01-31  
   last obs. used      2020-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56145  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:55:31  

Additional Information
 Jupiter MOID = 2.28324 au 
 T_jup = 3.331 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.001552593334109E-15 -5.585148813901226E-15 1.040426468098497E-11 1.520447260955832E-16 2.338053969212742E-12 -2.135035762803472E-15
q -5.585148813901226E-15 1.603195670109227E-14 -3.332375931312794E-11 -1.581662874394699E-15 -7.47842478505726E-12 6.636322643943352E-15
tp 1.040426468098497E-11 -3.332375931312794E-11 9.340032763385536E-7 1.317591886768017E-10 2.037078035098308E-7 8.262481692149538E-11
node 1.520447260955832E-16 -1.581662874394699E-15 1.317591886768017E-10 7.984421150186773E-10 -7.575466508658157E-10 4.857463102149113E-11
peri 2.338053969212742E-12 -7.47842478505726E-12 2.037078035098308E-7 -7.575466508658157E-10 4.522172311845571E-8 -3.002978386311438E-11
i -2.135035762803472E-15 6.636322643943352E-15 8.262481692149538E-11 4.857463102149113E-11 -3.002978386311438E-11 4.624945217887615E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO338105  
rotation period rot_per 2.87 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:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

120681 (1997 BB6)          Discovered 1997-Jan-31 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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