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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1460142787389978 1.1587e-08  
a 2.324497895105605 6.1649e-09 au
q 1.985088011521441 2.8244e-08 au
i 4.883834816989559 8.3117e-07 deg
node 336.0196572518114 7.1362e-06 deg
peri 99.54670845428514 1.001e-05 deg
M 314.0997242979087 8.6432e-06 deg
tp 2459365.545982047756
(2021-May-31.04598205)
3.1379e-05 TDB
period 1294.470515227976
3.54
5.1497e-06
1.41e-08
d
yr
n .278105986783792 1.1064e-09 deg/d
Q 2.663907778689768 7.0651e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2142  
   data-arc span      12872 days (35.24 yr)  
   first obs. used      1985-12-09  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40899  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:53:36  

Additional Information
 Earth MOID = 1.00673 au 
 Jupiter MOID = 2.5793 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 14.24   n/a E2021B10  
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

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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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