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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 ]

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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 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 
[ show covariance matrix ]

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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1941-Aug-30 13:34 00:02 Jupiter 1.69429301512791 1.6942912724725 1.69429475779882 2.93209387305984 2.75632379265619 2430237.065110653 2.35596944340366 278.124359093761 3.25308716014861 -72.6148255880904 11270510.8898696 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:43:03 2021-Apr-12 13:43
1952-Aug-12 17:13 00:02 Jupiter 1.42099410093528 1.42099360938237 1.42099459249901 2.7892036402229 2.56661296020226 2434237.217417734 1.65173678153605 207.876909436823 1.04680381003097 -83.8673079981822 10132992.2880174 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:43:03 2021-Apr-12 13:43
1963-Aug-17 10:37 00:01 Jupiter 1.4594326466823 1.45943204888939 1.45943324448733 2.56531759139609 2.3281104929444 2438258.942656506 1.31219437899451 233.817721431291 10.5288269567921 -82.2222321653699 8545646.42147225 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:43:03 2021-Apr-12 13:43
1974-Jun-26 19:26 00:01 Jupiter 1.77321710173326 1.7732163283111 1.77321787515763 2.38830731359669 2.17914218446761 2442225.309929757 1.13440841005985 112.313204170853 7.60641768885626 -75.0106472182654 7771036.03729386 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:43:03 2021-Apr-12 13:43
2072-Aug-31 07:07 00:02 Jupiter 1.8566315860703 1.85663047709942 1.85663269504318 2.85442242303239 2.68985094170568 2478085.796247806 1.54410863842767 115.452342144067 3.35916720284516 -64.6069985458463 10317559.146838 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:43:03 2021-Apr-12 13:43
2083-Jul-21 22:10 00:02 Jupiter 1.50261024188722 1.50260931721588 1.50261116657812 2.76716654796943 2.55534913787124 2482062.423843014 1.69088498680125 286.482813449259 1.75203663307961 -80.9082457205025 10182188.5328639 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:43:03 2021-Apr-12 13:43
2094-Jul-27 18:51 00:02 Jupiter 1.40375996286419 1.40375965352092 1.40376027220818 2.74506205093844 2.51566583011683 2486086.285513350 1.98714231601414 133.723528466056 14.9861297538251 86.0494970401866 9243845.59640176 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:43:03 2021-Apr-12 13:43
2105-Jul-10 12:13 00:03 Jupiter 1.62953243580474 1.62953065128899 1.62953422043859 2.60158706305283 2.39346310113428 2490086.008682287 2.81949029503189 730.569177967072 6.44442232041111 -82.7107256655908 8571019.68657349 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 13:43:03 2021-Apr-12 13:43

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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