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11649 (1997 BR6)
Classification: Main-belt Asteroid          SPK-ID: 2011649
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .145964923499632 3.1453e-08  
a 2.325243276750101 6.9784e-09 au
q 1.985839319741239 7.5649e-08 au
i 4.883102725551234 5.0426e-06 deg
node 336.0198845055666 3.9423e-05 deg
peri 99.41586211563732 4.4192e-05 deg
M 258.6136834234936 1.9847e-05 deg
tp 2459365.235358617568
(2021-May-30.73535862)
7.2121e-05 TDB
period 1295.093199319865
3.55
5.8302e-06
1.596e-08
d
yr
n .2779722727206495 1.2514e-09 deg/d
Q 2.664647233758963 7.997e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1960  
   data-arc span      12755 days (34.92 yr)  
   first obs. used      1985-12-09  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41185  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:46:39  

Additional Information
 Earth MOID = 1.00791 au 
 Jupiter MOID = 2.57918 au 
 T_jup = 3.556 
[ 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 14.1   n/a MPO337357  
diameter diameter 4.256 km 0.120 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 40.571 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.245   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

11649 (1997 BR6)          Discovered 1997-Jan-29 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 19990928/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 BR6 = 1985 XP = 1988 TN4 = 1999 QC2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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