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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1399971026287226 1.7193e-08  
a 3.173792331823123 1.717e-08 au
q 2.729470601022629 6.05e-08 au
i 10.7071340912952 9.2464e-07 deg
node 42.80001366720668 2.4816e-06 deg
peri 167.7894531996025 8.5008e-06 deg
M 227.6880475219849 1.2394e-05 deg
tp 2460155.536681131876
(2023-Jul-30.03668113)
7.4233e-05 TDB
period 2065.219355393302
5.65
1.6759e-05
4.588e-08
d
yr
n .1743156236938528 1.4146e-09 deg/d
Q 3.618114062623617 1.9574e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2887  
   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      .41756  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:36:52  

Additional Information
 Earth MOID = 1.72525 au 
 Jupiter MOID = 1.34729 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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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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