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9130 Galois (1998 HQ148)
Classification: Main-belt Asteroid          SPK-ID: 2009130
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2249951625499719 2.7038e-08  
a 2.366557035514831 6.9434e-09 au
q 1.834093150625392 6.486e-08 au
i 1.633715976133201 3.6973e-06 deg
node 230.9313396082927 0.0001217 deg
peri 67.71971090623477 0.00012203 deg
M 339.8006747221701 9.1251e-06 deg
tp 2459075.111926290565
(2020-Aug-13.61192629)
3.378e-05 TDB
period 1329.761915071706
3.64
5.8522e-06
1.602e-08
d
yr
n .2707251545706867 1.1914e-09 deg/d
Q 2.89902092040427 8.5056e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2171  
   data-arc span      17219 days (47.14 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48504  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:37:20  

Additional Information
 Earth MOID = .81913 au 
 Jupiter MOID = 2.32494 au 
 T_jup = 3.512 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456561.5 (2013-Sep-26.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2256498819789442 2.7128e-08  
q 1.831739260525749 6.5052e-08 au
tp 2456414.260128494109
(2013-May-01.76012849)
3.262e-05 TDB
node 231.2092074719116 0.0001218 deg
peri 67.09731882883385 0.00012212 deg
i 1.633618847824483 3.6933e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2171  
   data-arc span      17219 days (47.14 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48504  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:37:20  

Additional Information
 Jupiter MOID = 2.32494 au 
 T_jup = 3.512 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.359344954384368E-16 -1.758731124409314E-15 2.744578447443398E-13 -3.687085216218052E-15 6.733312181960284E-14 -1.877193044000067E-16
q -1.758731124409314E-15 4.231746907010989E-15 -6.67656080766515E-13 8.646850615998253E-15 -1.633946720325467E-13 5.008893509475398E-16
tp 2.744578447443398E-13 -6.67656080766515E-13 1.064080667324794E-9 -2.275938908476664E-12 3.020875591414025E-10 -2.501961042942891E-13
node -3.687085216218052E-15 8.646850615998253E-15 -2.275938908476664E-12 1.483450127093709E-8 -1.482859874566768E-8 -1.636360972949225E-10
peri 6.733312181960284E-14 -1.633946720325467E-13 3.020875591414025E-10 -1.482859874566768E-8 1.491339261416988E-8 1.634859502750835E-10
i -1.877193044000067E-16 5.008893509475398E-16 -2.501961042942891E-13 -1.636360972949225E-10 1.634859502750835E-10 1.364015487585386E-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 14.1   n/a MPO279612  
rotation period rot_per 5.396 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]

9130 Galois           Discovered 1998 Apr. 25 by E. W. Elst at the European Southern Observatory.
Named in memory of the famous French mathematician Evariste Galois (1811-1832), well known for his contributions to group theory. At the age of only 16, he launched himself into a deeper understanding of the essential conditions that an equation must satisfy to be solvable by radicals (Galois theory). He died in Paris in a duel, under circumstances that have never been fully explained, although his republican activities and sympathies were well known.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990202/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 1998 HQ148 = 1191 T-2 = 1995 WY26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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