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2364 Seillier (1978 GD)
Classification: Main-belt Asteroid          SPK-ID: 2002364
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1401969980277746 1.7186e-08  
a 3.173089655370866 1.7182e-08 au
q 2.728232011214884 6.0469e-08 au
i 10.70850727585749 9.2478e-07 deg
node 42.80150936335255 2.4813e-06 deg
peri 167.8476844473751 8.4903e-06 deg
M 193.4512843647641 1.2255e-05 deg
tp 2460155.626135181298
(2023-Jul-30.12613518)
7.4164e-05 TDB
period 2064.533535150969
5.65
1.6769e-05
4.591e-08
d
yr
n .1743735298412941 1.4163e-09 deg/d
Q 3.617947299526847 1.9591e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2886  
   data-arc span      25393 days (69.52 yr)  
   first obs. used      1951-09-01  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41672  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:41:50  

Additional Information
 Earth MOID = 1.72239 au 
 Jupiter MOID = 1.34858 au 
 T_jup = 3.159 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457386.5 (2015-Dec-30.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1402551320529025 1.7223e-08  
q 2.727965629731719 6.0709e-08 au
tp 2458096.143630083699
(2017-Dec-08.64363008)
6.7e-05 TDB
node 42.82191936075441 2.4809e-06 deg
peri 168.7957014338452 8.544e-06 deg
i 10.71151623253082 9.2444e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2886  
   data-arc span      25393 days (69.52 yr)  
   first obs. used      1951-09-01  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41672  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:41:50  

Additional Information
 Jupiter MOID = 1.34858 au 
 T_jup = 3.159 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.966145868361358E-16 -1.01638829673834E-15 -5.474600864810075E-13 -5.746254823571927E-15 -5.340245644848142E-14 -1.47383464776291E-16
q -1.01638829673834E-15 3.68560255754356E-15 2.084261659571153E-12 2.054066536929736E-14 1.984065325248859E-13 1.715073217842445E-15
tp -5.474600864810075E-13 2.084261659571153E-12 4.488951187085983E-9 4.111522881384194E-11 5.470753265648702E-10 1.557820067496328E-11
node -5.746254823571927E-15 2.054066536929736E-14 4.111522881384194E-11 6.154686988890606E-12 -8.082985958281912E-14 1.56198590788613E-12
peri -5.340245644848142E-14 1.984065325248859E-13 5.470753265648702E-10 -8.082985958281912E-14 7.300025114993937E-11 5.962241430399825E-13
i -1.47383464776291E-16 1.715073217842445E-15 1.557820067496328E-11 1.56198590788613E-12 5.962241430399825E-13 8.545861741814323E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.41   n/a E2021B10  
diameter diameter 19.629 km 0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.284 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:
[Casalnuovo, G.B. (2015) Minor Planet Bull. 42, 139-141.]
geometric albedo albedo 0.103   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2364 Seillier (1978 GD)          Discovered 1978-Apr-14 by Debehogne, H. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1978 GD = 1966 DX = 1971 BH = 1978 HA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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