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180421 (2004 BT73)
Classification: Main-belt Asteroid          SPK-ID: 2180421
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02185636523542335 3.8544e-08  
a 2.404928141751771 1.3747e-08 au
q 2.352365153920696 9.1476e-08 au
i 3.172590403745108 5.5967e-06 deg
node 207.0550508440052 7.6268e-05 deg
peri 274.0199143077125 0.00015195 deg
M 195.7157338476552 0.00013142 deg
tp 2459822.148735790585
(2022-Aug-30.64873579)
0.0004978 TDB
period 1362.233585272745
3.73
1.168e-05
3.198e-08
d
yr
n .2642718575521841 2.2659e-09 deg/d
Q 2.457491129582846 1.4047e-08 au
  Orbit Determination Parameters
   # obs. used (total)      534  
   data-arc span      6496 days (17.79 yr)  
   first obs. used      2002-09-05  
   last obs. used      2020-06-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54804  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:26:27  

Additional Information
 Earth MOID = 1.37023 au 
 Jupiter MOID = 2.53297 au 
 T_jup = 3.521 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456410.5 (2013-Apr-28.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0221234521584465 3.8589e-08  
q 2.350818976559371 9.1621e-08 au
tp 2455737.036531507224
(2011-Jun-24.53653151)
0.00048711 TDB
node 207.2147936908907 7.6332e-05 deg
peri 273.7926145524506 0.00015022 deg
i 3.171287733938998 5.5942e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      534  
   data-arc span      6496 days (17.79 yr)  
   first obs. used      2002-09-05  
   last obs. used      2020-06-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54804  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:26:27  

Additional Information
 Jupiter MOID = 2.53297 au 
 T_jup = 3.521 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.489128198750573E-15 -3.499536032223613E-15 5.080197369847381E-12 7.658974255884752E-15 1.357402652660534E-12 -5.241246353488E-16
q -3.499536032223613E-15 8.394392901440096E-15 -1.196666227149502E-11 -1.72854166637639E-14 -3.179172791618005E-12 1.30751764980347E-15
tp 5.080197369847381E-12 -1.196666227149502E-11 2.372745934343642E-7 2.490015139538556E-12 6.303540832099398E-8 3.485977356134251E-12
node 7.658974255884752E-15 -1.72854166637639E-14 2.490015139538556E-12 5.826552976762213E-9 -5.816351618151666E-9 -9.477843578992761E-11
peri 1.357402652660534E-12 -3.179172791618005E-12 6.303540832099398E-8 -5.816351618151666E-9 2.256720321086738E-8 9.558358915166447E-11
i -5.241246353488E-16 1.30751764980347E-15 3.485977356134251E-12 -9.477843578992761E-11 9.558358915166447E-11 3.129518663548156E-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 16.39   n/a E2021B55  

180421 (2004 BT73)          Discovered 2004-Jan-24 by LINEAR at Socorro
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2004 BT73 = 2002 RC190 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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