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JPL Small-Body Database Browser
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37835 (1998 BC44)
Classification: Main-belt Asteroid          SPK-ID: 2037835
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1671348362295622 3.3275e-08  
a 2.388723609546139 9.3866e-09 au
q 1.989484680266956 8.0944e-08 au
i 5.679246130916259 4.1416e-06 deg
node 85.28865711204666 3.7494e-05 deg
peri 76.63601654074418 3.9584e-05 deg
M 353.9836904874093 1.3868e-05 deg
tp 2459023.035902230715
(2020-Jun-22.53590223)
5.1996e-05 TDB
period 1348.488601871136
3.69
7.9484e-06
2.176e-08
d
yr
n .2669655490602376 1.5736e-09 deg/d
Q 2.787962538825322 1.0955e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1030  
   data-arc span      12078 days (33.07 yr)  
   first obs. used      1987-04-01  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55262  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:28:58  

Additional Information
 Earth MOID = 1.00704 au 
 Jupiter MOID = 2.20849 au 
 T_jup = 3.508 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456938.5 (2014-Oct-08.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1672106139019011 3.3344e-08  
q 1.989531135121401 8.1122e-08 au
tp 2456326.670958881828
(2013-Feb-03.17095888)
4.841e-05 TDB
node 85.32213336886042 3.7505e-05 deg
peri 76.77403703445854 3.9586e-05 deg
i 5.678400650511648 4.1406e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1030  
   data-arc span      12078 days (33.07 yr)  
   first obs. used      1987-04-01  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55262  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:28:58  

Additional Information
 Jupiter MOID = 2.20849 au 
 T_jup = 3.508 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.111796519400547E-15 -2.692644451640579E-15 -3.625856944389257E-14 -5.703196532061328E-15 1.711990621549534E-14 2.175486726844933E-16
q -2.692644451640579E-15 6.580753004337473E-15 1.106242896722411E-13 1.322073178406092E-14 -2.854278861156617E-14 -4.826521823071083E-16
tp -3.625856944389257E-14 1.106242896722411E-13 2.34353723880294E-9 -4.404413325441033E-12 6.229015555149901E-10 -8.461393435946789E-14
node -5.703196532061328E-15 1.322073178406092E-14 -4.404413325441033E-12 1.406661927208629E-9 -1.400706510957872E-9 -1.351742952342779E-11
peri 1.711990621549534E-14 -2.854278861156617E-14 6.229015555149901E-10 -1.400706510957872E-9 1.567029039709304E-9 1.343758643511018E-11
i 2.175486726844933E-16 -4.826521823071083E-16 -8.461393435946789E-14 -1.351742952342779E-11 1.343758643511018E-11 1.714450691430616E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO502425  
diameter diameter 5.226 km 0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.459 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.041   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37835 (1998 BC44)          Discovered 1998-Jan-25 by Munari, U., Tombelli, M. at Cima Ekar
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 BC44 = 2000 SH266 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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