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2784 Domeyko (1975 GA)
Classification: Main-belt Asteroid          SPK-ID: 2002784
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 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1733769242797519 1.9228e-08  
a 2.242080422373974 5.6837e-09 au
q 1.853355414754927 4.3219e-08 au
i 6.694757722872232 1.1296e-06 deg
node 108.0917242991155 5.9925e-06 deg
peri 180.843099887345 7.6661e-06 deg
M 200.1756763876099 4.3253e-06 deg
tp 2459940.896821607498
(2022-Dec-27.39682161)
1.5651e-05 TDB
period 1226.239231607835
3.36
4.6628e-06
1.277e-08
d
yr
n .2935805597476855 1.1163e-09 deg/d
Q 2.63080542999302 6.6691e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2713  
   data-arc span      22484 days (61.56 yr)  
   first obs. used      1959-10-06  
   last obs. used      2021-04-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43202  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:46:53  

Additional Information
 Earth MOID = .836684 au 
 Jupiter MOID = 2.53333 au 
 T_jup = 3.605 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456780.5 (2014-May-03.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1737083723053777 1.9148e-08  
q 1.852548784535934 4.2973e-08 au
tp 2456261.506513340078
(2012-Nov-30.00651334)
1.489e-05 TDB
node 108.1268363724585 5.9892e-06 deg
peri 180.549034844751 7.6585e-06 deg
i 6.69659223833938 1.1297e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2713  
   data-arc span      22484 days (61.56 yr)  
   first obs. used      1959-10-06  
   last obs. used      2021-04-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43202  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:46:53  

Additional Information
 Jupiter MOID = 2.53333 au 
 T_jup = 3.605 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.666386304703868E-16 -8.179007384606473E-16 1.791793176355472E-13 -9.705705249002077E-15 7.855807920209381E-14 5.397047369674708E-16
q -8.179007384606473E-16 1.846713585322724E-15 -4.301725404025652E-13 2.209366898555215E-14 -1.795624185035713E-13 -1.19036513669828E-15
tp 1.791793176355472E-13 -4.301725404025652E-13 2.216986846139508E-10 -1.24971906352108E-12 6.656373133442257E-11 -3.896013546485669E-13
node -9.705705249002077E-15 2.209366898555215E-14 -1.24971906352108E-12 3.587073938747556E-11 -3.639680699289539E-11 1.733676172456209E-12
peri 7.855807920209381E-14 -1.795624185035713E-13 6.656373133442257E-11 -3.639680699289539E-11 5.865293993815246E-11 -1.898778398633511E-12
i 5.397047369674708E-16 -1.19036513669828E-15 -3.896013546485669E-13 1.733676172456209E-12 -1.898778398633511E-12 1.276254408869887E-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 12.88   n/a E2021B10  
rotation period rot_per 6.025 h n/a LCDB (Rev. 2020-October); 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:
[Almeida, R.; Angeli, C.A.; Duffard, R.; Lazzaro, D. (2004) Astron. Astrophys. 415, 403-406.]
[Polakis, T. (2019) Minor Planet Bull. 46, 400-406.]

2784 Domeyko (1975 GA)          Discovered 1975-Apr-15 by Torres, C. at Cerro El Roble
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1975 GA = 1959 TS = 1972 KD = 1972 LK = 1979 ST1 = 1982 JB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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