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4294 Horatius (4016 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2004294
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02345889952233719 2.5083e-08  
a 2.804908334237775 1.3259e-08 au
q 2.739108271455525 7.5869e-08 au
i 4.873304661353101 1.8005e-07 deg
node 339.6431860766533 4.4208e-06 deg
peri 23.64254960992982 2.4314e-05 deg
M 303.1576333771252 2.2829e-05 deg
tp 2459471.423131505673
(2021-Sep-13.92313151)
0.00010847 TDB
period 1715.838610118544
4.70
1.2167e-05
3.331e-08
d
yr
n .2098099424252542 1.4877e-09 deg/d
Q 2.870708397020025 1.357e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2142  
   data-arc span      25126 days (68.79 yr)  
   first obs. used      1951-12-01  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46467  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:10:21  

Additional Information
 Earth MOID = 1.73342 au 
 Jupiter MOID = 2.22724 au 
 T_jup = 3.318 
[ 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 12.89   n/a E2021B10  
diameter diameter 8.484 km 0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.499 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:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.186   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4294 Horatius (4016 P-L)          Discovered 1960-Sep-24 by van Houten and Gehrels at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 4016 P-L = 1974 SS = 1979 WR5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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