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123801 (2001 BK54)
Classification: Main-belt Asteroid          SPK-ID: 2123801
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .133734393228371 5.6557e-08  
a 3.118211751625244 2.753e-08 au
q 2.701199595064066 1.6838e-07 au
i 10.65178301736892 5.8844e-06 deg
node 326.2856108799522 2.4652e-05 deg
peri 311.058921620625 3.5457e-05 deg
M 62.83357375157372 2.9421e-05 deg
tp 2458649.468497009125
(2019-Jun-14.96849701)
0.00016194 TDB
period 2011.207281896007
5.51
2.6635e-05
7.292e-08
d
yr
n .178996965275812 2.3705e-09 deg/d
Q 3.535223908186422 3.1212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      697  
   data-arc span      8071 days (22.10 yr)  
   first obs. used      1998-10-12  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5158  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:48:53  

Additional Information
 Earth MOID = 1.69936 au 
 Jupiter MOID = 1.74387 au 
 T_jup = 3.177 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457473.5 (2016-Mar-26.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .134314300872262 5.6438e-08  
q 2.699546780579283 1.6827e-07 au
tp 2456642.820150500312
(2013-Dec-16.32015050)
0.00014961 TDB
node 326.4183758979434 2.4659e-05 deg
peri 311.9148320479192 3.5357e-05 deg
i 10.64918750782299 5.8859e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      697  
   data-arc span      8071 days (22.10 yr)  
   first obs. used      1998-10-12  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5158  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:48:53  

Additional Information
 Jupiter MOID = 1.74387 au 
 T_jup = 3.177 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.185295788216404E-15 -9.417843808591905E-15 4.502548593385053E-12 1.163655710941699E-14 6.400339681728652E-13 -6.949887063091754E-16
q -9.417843808591905E-15 2.831646415816894E-14 -1.28248784143002E-11 -3.257692501847061E-14 -1.771951000075636E-12 2.34517182200374E-15
tp 4.502548593385053E-12 -1.28248784143002E-11 2.238168770809056E-8 3.245108610782648E-11 3.792285201678158E-9 -1.421950276587886E-11
node 1.163655710941699E-14 -3.257692501847061E-14 3.245108610782648E-11 6.080481236740925E-10 -5.918606352815629E-10 4.67313926883027E-11
peri 6.400339681728652E-13 -1.771951000075636E-12 3.792285201678158E-9 -5.918606352815629E-10 1.250102495911788E-9 -4.844434122913677E-11
i -6.949887063091754E-16 2.34517182200374E-15 -1.421950276587886E-11 4.67313926883027E-11 -4.844434122913677E-11 3.46435796710162E-11

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 14.4   n/a MPO436600  

123801 (2001 BK54)          Discovered 2001-Jan-18 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 2001 BK54 = 2003 QW32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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