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JPL Small-Body Database Browser
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1924 Horus (4023 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2001924
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1306793557608186 3.5369e-08  
a 2.340827301905102 6.7446e-09 au
q 2.034929498144808 8.364e-08 au
i 2.728854414135761 3.853e-06 deg
node 350.2285209701058 6.9579e-05 deg
peri 152.6754762313316 7.0914e-05 deg
M 118.6962203594459 1.3045e-05 deg
tp 2458569.192631974620
(2019-Mar-26.69263197)
4.712e-05 TDB
period 1308.134766371945
3.58
5.6536e-06
1.548e-08
d
yr
n .2752010031798516 1.1894e-09 deg/d
Q 2.646725105665396 7.6259e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2474  
   data-arc span      21414 days (58.63 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46037  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:28:36  

Additional Information
 Earth MOID = 1.04783 au 
 Jupiter MOID = 2.3614 au 
 T_jup = 3.551 
[ 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 13.5   n/a MPO365267  
diameter diameter 12.986 km 0.135 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.183 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.070   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1924 Horus           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten- Groeneveld at Leiden, on Palomar Schmidt plates taken by T. Gehrels.
Named for the son of Osiris, an Egyptian god in the shape of a falcon, king of the sky and the stars.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5013Last Updated: 2006-03-21

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Alternate Designations
 4023 P-L = 1951 BD = 1969 BA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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