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2245 Hekatostos (1968 BC)
Classification: Main-belt Asteroid          SPK-ID: 2002245
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1336888176095811 4.807e-08  
a 2.635987303234977 1.0782e-08 au
q 2.283585277431624 1.2575e-07 au
i 11.85142668822789 4.1797e-06 deg
node 85.18231488062246 1.9955e-05 deg
peri 316.8194980333565 2.408e-05 deg
M 145.1959177156556 1.488e-05 deg
tp 2458370.028726690982
(2018-Sep-08.52872669)
6.3373e-05 TDB
period 1563.195866399855
4.28
9.5906e-06
2.626e-08
d
yr
n .2302974360014808 1.4129e-09 deg/d
Q 2.988389329038329 1.2223e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2386  
   data-arc span      22476 days (61.54 yr)  
   first obs. used      1958-12-04  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39292  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:42:44  

Additional Information
 Earth MOID = 1.30884 au 
 Jupiter MOID = 2.39804 au 
 T_jup = 3.355 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.7   n/a MPO384769  
diameter diameter 29.28 km 1.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
rotation period rot_per 20.61 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:
[Klinglesmith, D.A. III; DeHart, A.; Hanowell, J.; Hendrickx, S. (2015) Minor Planet Bull. 42, 158-159.]
geometric albedo albedo 0.0622   0.005 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10

2245 Hekatostos           Discovered 1968 Jan. 24 by L. I. Chernykh at the Crimean Astrophysical Observatory.
The Greek ordinal number acknowledges this as the 100th minor planet to be numbered as a result of the joint observational program of the Institute for Theoretical Astronomy in Leningrad and the Crimean Astrophysical Observatory at Nauchnij.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5850Last Updated: 2006-03-21

Alternate Designations
 1968 BC = 1930 FA = 1958 XC = 1966 QV = 1971 XC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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