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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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1401969557837168 4.0985e-08  
a 3.173089650441447 1.8247e-08 au
q 2.728232141020738 1.3095e-07 au
i 10.70850543471669 4.3923e-06 deg
node 42.80146194314509 1.8641e-05 deg
peri 167.8477277520431 2.2936e-05 deg
M 193.4512892213017 1.5992e-05 deg
tp 2460155.626105104257
(2023-Jul-30.12610510)
9.6162e-05 TDB
period 2064.533530340066
5.65
1.7809e-05
4.876e-08
d
yr
n .1743735302476301 1.5041e-09 deg/d
Q 3.617947159862156 2.0806e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2803  
   data-arc span      25341 days (69.38 yr)  
   first obs. used      1951-09-01  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41322  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:02:25  

Additional Information
 Earth MOID = 1.72239 au 
 Jupiter MOID = 1.34858 au 
 T_jup = 3.159 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457379.5 (2015-Dec-23.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1402480200510106 4.1018e-08  
q 2.728003820859428 1.3101e-07 au
tp 2458096.145917056934
(2017-Dec-08.64591706)
8.7779e-05 TDB
node 42.82178312805424 1.8635e-05 deg
peri 168.7947369422689 2.2981e-05 deg
i 10.71148844817725 4.3944e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2803  
   data-arc span      25341 days (69.38 yr)  
   first obs. used      1951-09-01  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41322  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:02:25  

Additional Information
 Jupiter MOID = 1.34858 au 
 T_jup = 3.159 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.68248630648203E-15 -5.335113633376902E-15 -1.056909737823537E-12 1.92841398153841E-15 -1.564889795963949E-13 -6.640800188512654E-16
q -5.335113633376902E-15 1.71643166363701E-14 3.914150563310463E-12 -7.239296073346387E-15 5.686569193948637E-13 3.165068724164701E-15
tp -1.056909737823537E-12 3.914150563310463E-12 7.705202446820138E-9 -7.096872934578665E-12 1.194237915149078E-9 5.550994444941262E-12
node 1.92841398153841E-15 -7.239296073346387E-15 -7.096872934578665E-12 3.472696282186223E-10 -3.420439116240367E-10 -2.46606877529995E-11
peri -1.564889795963949E-13 5.686569193948637E-13 1.194237915149078E-9 -3.420439116240367E-10 5.281487794759756E-10 2.503784792983567E-11
i -6.640800188512654E-16 3.165068724164701E-15 5.550994444941262E-12 -2.46606877529995E-11 2.503784792983567E-11 1.931079631924003E-11

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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