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3078 Horrocks (1984 FG)
Classification: Main-belt Asteroid          SPK-ID: 2003078
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1045148836512672 4.0078e-08  
a 3.145325006317516 1.7944e-08 au
q 2.81659172923682 1.2651e-07 au
i 7.088237402215912 4.3739e-06 deg
node 32.39115626915012 3.4264e-05 deg
peri 140.8042119149554 3.9504e-05 deg
M 178.3833973008719 1.9976e-05 deg
tp 2457990.901611983004
(2017-Aug-25.40161198)
0.00011182 TDB
period 2037.495782598498
5.58
1.7436e-05
4.774e-08
d
yr
n .1766874822881243 1.512e-09 deg/d
Q 3.474058283398213 1.982e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2504  
   data-arc span      23244 days (63.64 yr)  
   first obs. used      1956-05-08  
   last obs. used      2019-12-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44899  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:38:07  

Additional Information
 Earth MOID = 1.82544 au 
 Jupiter MOID = 1.49786 au 
 T_jup = 3.189 
[ 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 11.6   n/a MPO492787  
diameter diameter 28.284 km 0.436 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 13.620 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Klinglesmith III, D.A.; Risley, E.; Turk, J.; Vargas, A.; Warren, C. (2013) Minor Planet Bull. 40, 16-17.]
geometric albedo albedo 0.061   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3078 Horrocks (1984 FG)          Discovered 1984-Mar-31 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1984 FG = 1964 TS1 = 1970 SE1 = 1973 GS = 1976 YX6 = 1978 ET4 = 1982 YQ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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