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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0532299409916568 2.3471e-08  
a 1.817673732078155 3.725e-09 au
q 1.72091906657755 4.366e-08 au
i 21.13203470256494 1.1493e-06 deg
node 29.7739392022706 1.8754e-06 deg
peri 218.3793904437184 2.4341e-05 deg
M 277.9550115684111 2.6871e-05 deg
tp 2459600.496107613386
(2022-Jan-20.99610761)
6.6938e-05 TDB
period 895.1015795687975
2.45
2.7515e-06
7.533e-09
d
yr
n .4021889897383768 1.2363e-09 deg/d
Q 1.91442839757876 3.9233e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2579  
   data-arc span      14393 days (39.41 yr)  
   first obs. used      1982-01-30  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37702  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:22:36  

Additional Information
 Earth MOID = .729363 au 
 Jupiter MOID = 3.07089 au 
 T_jup = 3.964 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457333.5 (2015-Nov-07.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05344868853866565 2.3434e-08  
q 1.720366918987278 4.3598e-08 au
tp 2456915.920241722844
(2014-Sep-15.42024172)
6.5637e-05 TDB
node 29.80179485673392 1.8744e-06 deg
peri 218.5669860552054 2.4303e-05 deg
i 21.13431199058143 1.1494e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2579  
   data-arc span      14393 days (39.41 yr)  
   first obs. used      1982-01-30  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37702  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:22:36  

Additional Information
 Jupiter MOID = 3.07089 au 
 T_jup = 3.964 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.491622398785987E-16 -1.018544243755747E-15 -5.693858794145396E-13 2.176740342845659E-14 -2.312737003601187E-13 1.650153239859778E-14
q -1.018544243755747E-15 1.900770410208596E-15 1.054127676432196E-12 -4.015160895317181E-14 4.295993680544039E-13 -3.038028363285919E-14
tp -5.693858794145396E-13 1.054127676432196E-12 4.308155504413188E-9 -2.01664775185672E-11 1.590114730378855E-9 -1.207436855612609E-11
node 2.176740342845659E-14 -4.015160895317181E-14 -2.01664775185672E-11 3.513366049418332E-12 -1.064119923491205E-11 1.609046162808318E-12
peri -2.312737003601187E-13 4.295993680544039E-13 1.590114730378855E-9 -1.064119923491205E-11 5.906537046218123E-10 -6.135434792154262E-12
i 1.650153239859778E-14 -3.038028363285919E-14 -1.207436855612609E-11 1.609046162808318E-12 -6.135434792154262E-12 1.321055971665891E-12

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.78   n/a MPO614063  
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. 2020-October); 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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