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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 57 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09605516419648237 3.3324e-08  
a 1.929737381058353 5.6523e-09 au
q 1.744376140064703 6.2625e-08 au
i 18.13717521707665 5.1292e-06 deg
node 292.3134583247815 1.1672e-05 deg
peri 129.5985501552508 3.3066e-05 deg
M 107.4526985422494 2.9508e-05 deg
tp 2458708.245930415937
(2019-Aug-12.74593042)
8.0252e-05 TDB
period 979.1421386117576
2.68
4.302e-06
1.178e-08
d
yr
n .3676687845448194 1.6154e-09 deg/d
Q 2.115098622052003 6.1953e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1712  
   data-arc span      14727 days (40.32 yr)  
   first obs. used      1980-02-20  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37323  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:56:03  

Additional Information
 Earth MOID = .794635 au 
 Jupiter MOID = 3.1059 au 
 T_jup = 3.849 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457283.5 (2015-Sep-18.0) TDB
Reference: JPL 57 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09596743291067651 3.3307e-08  
q 1.744547836578633 6.2585e-08 au
tp 2457728.620961907400
(2016-Dec-06.12096191)
8.0531e-05 TDB
node 292.3527130866368 1.1675e-05 deg
peri 129.4744586026802 3.3112e-05 deg
i 18.13356313687243 5.1291e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1712  
   data-arc span      14727 days (40.32 yr)  
   first obs. used      1980-02-20  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37323  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:56:03  

Additional Information
 Jupiter MOID = 3.1059 au 
 T_jup = 3.849 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.109328204640286E-15 -2.07850302706677E-15 6.451087013026324E-14 -3.959582424037074E-15 -3.046148401007806E-14 -2.363992486369752E-15
q -2.07850302706677E-15 3.916931967091805E-15 -1.452395515179132E-13 7.09556403689458E-15 4.453790540620869E-14 4.6729601281446E-15
tp 6.451087013026324E-14 -1.452395515179132E-13 6.485218058321079E-9 -1.078412991938085E-11 2.499600403021581E-9 -2.230266136371247E-11
node -3.959582424037074E-15 7.09556403689458E-15 -1.078412991938085E-11 1.363011647697346E-10 -1.326622446599979E-10 2.333653885202359E-11
peri -3.046148401007806E-14 4.453790540620869E-14 2.499600403021581E-9 -1.326622446599979E-10 1.096430622327622E-9 -3.057912597484357E-11
i -2.363992486369752E-15 4.6729601281446E-15 -2.230266136371247E-11 2.333653885202359E-11 -3.057912597484357E-11 2.630734493459562E-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 MPO453186  
rotation period rot_per 3.1664 h n/a LCDB (Rev. 2019-August); 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.]

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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