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37816 (1998 BT2)
Classification: Main-belt Asteroid          SPK-ID: 2037816
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .137011789763742 6.4638e-08  
a 2.365123884888944 1.9711e-08 AU
q 2.041074028407335 1.5457e-07 AU
i 5.006938780272856 6.5695e-06 deg
node 91.67833572511145 0.00011718 deg
peri 353.0992925507521 0.00012467 deg
M 207.0093642259528 4.494e-05 deg
tp 2457365.100965456986
(2015-Dec-08.60096546)
0.00016952 JED
period 1328.554172849543
3.64
1.6609e-05
4.547e-08
d
yr
n .2709712613583951 3.3875e-09 deg/d
Q 2.689173741370553 2.2412e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      554  
   data-arc span      7136 days (19.54 yr)  
   first obs. used      1993-10-16  
   last obs. used      2013-04-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .63013  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-06 01:29:27  

Additional Information
 Earth MOID = 1.05664 AU 
 T_jup = 3.531 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2 mag n/a MPO263662  

37816 (1998 BT2)          Discovered 1998-Jan-19 by Shimizu, Y., Urata, T. at Nachi-Katsuura (905)
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 BT2 = 1993 UR3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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