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1365 Henyey (1928 RK)
Classification: Main-belt Asteroid          SPK-ID: 2001365
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1228121211445486 3.0258e-08  
a 2.248626552090498 5.2491e-09 au
q 1.972467955566311 6.7891e-08 au
i 5.076858933560444 3.2271e-06 deg
node 258.5466006523192 4.4447e-05 deg
peri 337.1039678171489 4.7266e-05 deg
M 171.3204300070035 1.6839e-05 deg
tp 2458414.387364938994
(2018-Oct-22.88736494)
5.7174e-05 TDB
period 1231.613466142575
3.37
4.3126e-06
1.181e-08
d
yr
n .2922994997184655 1.0235e-09 deg/d
Q 2.524785148614685 5.8938e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2849  
   data-arc span      41214 days (112.84 yr)  
   first obs. used      1907-04-04  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42922  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:52:49  

Additional Information
 Earth MOID = .9617 au 
 Jupiter MOID = 2.48155 au 
 T_jup = 3.614 
[ 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 11.8   n/a MPO435709  
diameter diameter 10.958 km 0.369 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 18.986 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 III, D.A.; Hanowell, J.; Risley, E.; Turk, J.; et al. (2013) Minor Planet Bull. 40, 65-67.]
geometric albedo albedo 0.280   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1365 Henyey (1928 RK)          Discovered 1928-Sep-09 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1928 RK = 1932 WL = 1941 ME = 1973 YG4 = 1984 BA = A907 GK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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