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3309 Brorfelde (1982 BH)
Classification: Inner Main-belt Asteroid          SPK-ID: 2003309
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05342386645180881 4.1656e-08  
a 1.817419075999237 4.2054e-09 au
q 1.720325521996084 7.6722e-08 au
i 21.13330373601826 5.9694e-06 deg
node 29.78092417358574 9.3106e-06 deg
peri 218.3498937961486 5.1993e-05 deg
M 118.7028908408744 5.1066e-05 deg
tp 2458705.419952233477
(2019-Aug-09.91995223)
0.00012706 TDB
period 894.9134805684889
2.45
3.1062e-06
8.504e-09
d
yr
n .4022735245549234 1.3963e-09 deg/d
Q 1.91451263000239 4.4301e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2147  
   data-arc span      14153 days (38.75 yr)  
   first obs. used      1982-01-30  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38803  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:01:22  

Additional Information
 Earth MOID = .728198 au 
 Jupiter MOID = 3.0731 au 
 T_jup = 3.964 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456983.5 (2014-Nov-22.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05334945711520524 4.152e-08  
q 1.720638966519776 7.6468e-08 au
tp 2456916.048542835224
(2014-Sep-15.54854284)
0.00012854 TDB
node 29.80590242923476 9.3109e-06 deg
peri 218.6317723845253 5.2199e-05 deg
i 21.13312286264054 5.9692e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2147  
   data-arc span      14153 days (38.75 yr)  
   first obs. used      1982-01-30  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38803  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:01:22  

Additional Information
 Jupiter MOID = 3.0731 au 
 T_jup = 3.964 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.723887568567648E-15 -3.170852112843583E-15 -2.564414333421079E-12 6.727038438590474E-15 -9.976703155406064E-13 -1.190749747764057E-15
q -3.170852112843583E-15 5.847417486427316E-15 4.571011560640808E-12 -1.253318124526032E-14 1.775779344410764E-12 2.310839719142808E-15
tp -2.564414333421079E-12 4.571011560640808E-12 1.652349781680124E-8 -2.096182617534992E-11 6.607047242840827E-9 2.668783375995425E-13
node 6.727038438590474E-15 -1.253318124526032E-14 -2.096182617534992E-11 8.669371990547823E-11 -8.801740634909749E-11 -1.316428269580716E-11
peri -9.976703155406064E-13 1.775779344410764E-12 6.607047242840827E-9 -8.801740634909749E-11 2.724749519990049E-9 1.236303379231877E-11
i -1.190749747764057E-15 2.310839719142808E-15 2.668783375995425E-13 -1.316428269580716E-11 1.236303379231877E-11 3.563167936352852E-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 13.7   n/a MPO473811  
diameter diameter 5.038 km 0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 2.5041 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D.; Pravec, P.; Kusnirak, P.; Cooney Jr.; et al. (2005) CBET 279.]
[Warner, B.D. (2009) Minor Planet Bull. 36, 108.]
[Warner, B.D.; Pravec, P.; Kusnirak, P.; Harris, A.W.; et al. (2011) Minor Planet Bull. 38, 107-109.]
[Pravec, P.; Scheirich, P.; Vokrouhlicky, D.; Harris, A.W.; et al. (2012) Icarus 218, 125-143. See also supplemental on-line material.]
[Warner, B.D. (2014) Minor Planet Bull. 41, 144-155.]
geometric albedo albedo 0.408   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

3309 Brorfelde (1982 BH)          Discovered 1982-Jan-28 by Jensen, K. and Augustesen, K. at Brorfelde
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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