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5423 Horahorejs (1983 DC)
Classification: Main-belt Asteroid          SPK-ID: 2005423
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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1610308292061695 2.769e-08  
a 2.380893012192471 7.0627e-09 au
q 1.997495836187942 6.4221e-08 au
i 2.681879648592652 3.7381e-06 deg
node 338.3353870869024 5.68e-05 deg
peri 138.9179630126486 5.8156e-05 deg
M 78.94913133682856 1.1932e-05 deg
tp 2458706.225180094777
(2019-Aug-10.72518009)
4.4015e-05 TDB
period 1341.863214604635
3.67
5.9708e-06
1.635e-08
d
yr
n .2682836790529875 1.1938e-09 deg/d
Q 2.764290188196999 8.2e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2322  
   data-arc span      16148 days (44.21 yr)  
   first obs. used      1976-05-02  
   last obs. used      2020-07-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4674  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:43:37  

Additional Information
 Earth MOID = 1.0146 au 
 Jupiter MOID = 2.32072 au 
 T_jup = 3.519 
[ 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 14.18   n/a E2021B10  
diameter diameter 8.883 km 0.250 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5423 Horahořejš           Discovered 1983 Feb. 16 by Z. Vavrova at Klet.
Petr Hora Hořejš (b. 1938) is a Czech journalist, screenwriter and novelist. He wrote a thirteen book series about Czech history "Toulky českou minulostí" ("Rambles through Czech History").
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2015-08-29Last Updated: 2015-09-02

Alternate Designations
 1983 DC = 1976 JD1 = 1985 SX5 = 1989 XE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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