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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 ]

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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 
[ 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 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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