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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1404183390951078 4.125e-08  
a 3.172488570380805 1.9156e-08 au
q 2.72701299452972 1.3132e-07 au
i 10.70973892929067 4.4192e-06 deg
node 42.79956370350197 2.2767e-05 deg
peri 167.8844721060165 2.7089e-05 deg
M 158.5238055741103 1.6453e-05 deg
tp 2458091.653550604563
(2017-Dec-04.15355060)
9.1597e-05 TDB
period 2063.946929594733
5.65
1.8693e-05
5.118e-08
d
yr
n .1744230894883949 1.5798e-09 deg/d
Q 3.617964146231891 2.1846e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2312  
   data-arc span      24966 days (68.35 yr)  
   first obs. used      1951-09-01  
   last obs. used      2020-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44756  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 18:32:50  

Additional Information
 Earth MOID = 1.72213 au 
 Jupiter MOID = 1.34971 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 11.3   n/a MPO319112  
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. 2019-August); 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

[ hide close-approach data ]
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 00:03 Jupiter 1.69429379097083 1.69429165794083 1.69429592402356 2.93209354581723 2.75632352659757 2430237.065559425 2.77600015012758 341.043433608107 9.28801478511469 -72.9800317771893 2910894.15038916 T 34 CATAB v2.0f-lin.ifort 2020-Jan-28 18:33:37 2020-Jan-28 18:33
1952-Aug-12 17:13 00:02 Jupiter 1.4209943811576 1.42099361424825 1.42099514808835 2.78920425084076 2.56661366829188 2434237.217682935 1.94731622581949 317.251555487488 2.64141194406632 -83.5959011402729 2193457.72317153 T 34 CATAB v2.0f-lin.ifort 2020-Jan-28 18:33:37 2020-Jan-28 18:33
1963-Aug-17 10:38 00:02 Jupiter 1.45943242907372 1.4594317236221 1.45943313454368 2.56531931270377 2.32811235108526 2438258.942835662 1.52115277503444 423.038470642544 24.1184044278398 -84.8676051452329 2269071.34769775 T 34 CATAB v2.0f-lin.ifort 2020-Jan-28 18:33:37 2020-Jan-28 18:33
1974-Jun-26 19:27 00:01 Jupiter 1.77321677492185 1.77321583764593 1.77321771219978 2.38830877096272 2.17914374010788 2442225.310130609 1.3164076971265 143.361898900451 28.6661735531792 -78.4783285278621 2453484.29529849 T 34 CATAB v2.0f-lin.ifort 2020-Jan-28 18:33:37 2020-Jan-28 18:33
2072-Aug-31 07:07 00:02 Jupiter 1.85663200674953 1.85663071581846 1.85663329768355 2.85442181621863 2.6898503352583 2478085.796352542 1.7560374762827 140.740997533349 9.49464184204569 -65.4461459122128 3166984.03649071 T 34 CATAB v2.0f-lin.ifort 2020-Jan-28 18:33:37 2020-Jan-28 18:33
2083-Jul-21 22:10 00:02 Jupiter 1.50261062687611 1.5026096081797 1.50261164559601 2.76716631218907 2.55534893784772 2482062.423915265 1.92798505088671 330.558003763976 5.09090612298685 -81.0222588346285 2480709.68654041 T 34 CATAB v2.0f-lin.ifort 2020-Jan-28 18:33:37 2020-Jan-28 18:33
2094-Jul-27 18:51 00:02 Jupiter 1.40375993356516 1.40375933737419 1.40376052975717 2.74506291437887 2.5156667659606 2486086.285642660 2.29894927069361 273.039533926902 29.0680182781938 -86.7469254586498 2496180.29766246 T 34 CATAB v2.0f-lin.ifort 2020-Jan-28 18:33:37 2020-Jan-28 18:33
2105-Jul-10 12:13 00:03 Jupiter 1.62953189562335 1.6295297112326 1.62953408017853 2.60158887333177 2.39346499563489 2490086.008993960 3.28163865331473 890.864767858382 27.0845613055472 -83.0081667277773 2214211.1958572 T 34 CATAB v2.0f-lin.ifort 2020-Jan-28 18:33:37 2020-Jan-28 18:33

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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