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76818 Brianenke (2000 RG79)
Classification: Inner Main-belt Asteroid          SPK-ID: 2076818
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 61 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09604574377812905 1.5427e-08  
a 1.929660003790387 5.1041e-09 au
q 1.744324373487432 3.0024e-08 au
i 18.13716658300411 5.8977e-07 deg
node 292.3129677686181 1.8142e-06 deg
peri 129.5429253427505 1.1023e-05 deg
M 181.0542187380841 1.2822e-05 deg
tp 2459687.174490808430
(2022-Apr-17.67449081)
3.5466e-05 TDB
period 979.0832477609367
2.68
3.8846e-06
1.064e-08
d
yr
n .3676908994442333 1.4588e-09 deg/d
Q 2.114995634093342 5.5943e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1753  
   data-arc span      15006 days (41.08 yr)  
   first obs. used      1980-02-20  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37698  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:26:16  

Additional Information
 Earth MOID = .794393 au 
 Jupiter MOID = 3.10603 au 
 T_jup = 3.849 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457293.5 (2015-Sep-28.0) TDB
Reference: JPL 61 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09596602505027728 1.5405e-08  
q 1.744553151358478 2.9982e-08 au
tp 2457728.620211635804
(2016-Dec-06.12021164)
3.3704e-05 TDB
node 292.3526992768144 1.814e-06 deg
peri 129.4739028436773 1.1032e-05 deg
i 18.13357650200688 5.8982e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      1753  
   data-arc span      15006 days (41.08 yr)  
   first obs. used      1980-02-20  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37698  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:26:16  

Additional Information
 Jupiter MOID = 3.10603 au 
 T_jup = 3.849 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.373084433790919E-16 -4.563354991426049E-16 3.152251432482434E-13 -1.974502147045004E-14 1.085950966804672E-13 -3.582896420946821E-15
q -4.563354991426049E-16 8.989292957891724E-16 -5.896203844696258E-13 3.731225612881092E-14 -2.062662119072891E-13 6.592813669233968E-15
tp 3.152251432482434E-13 -5.896203844696258E-13 1.135944300040121E-9 -2.409410321602174E-11 3.695295264419193E-10 6.47417179958354E-13
node -1.974502147045004E-14 3.731225612881092E-14 -2.409410321602174E-11 3.290533402374836E-12 -9.32074068327269E-12 1.194270612636637E-13
peri 1.085950966804672E-13 -2.062662119072891E-13 3.695295264419193E-10 -9.32074068327269E-12 1.217058262260032E-10 3.84709868788365E-13
i -3.582896420946821E-15 6.592813669233968E-15 6.47417179958354E-13 1.194270612636637E-13 3.84709868788365E-13 3.478844557002246E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.84   n/a E2021B10  
rotation period rot_per 3.1664 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D.; Pravec, P.; Pray, D. (2005) IAUC 8592.]
[Warner, B.D.; Stephens, R.D. (2009) Minor Planet Bull. 36, 62-63.]
[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, 54-57.]
[Stephens, R.D.; Warner, B.D. (2020) Minor Planet Bull. 47, 224-230.]

76818 Brianenke          
Brian L. Enke (b. 1964) is a systems and data analyst, and planetary scientist, at Southwest Research Institute, and also a recognized science-fiction author. He has participated in multiple interplanetary spacecraft missions and in the discovery of several asteroid satellites from imaging.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2019-12-12Last Updated: 2019-12-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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