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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1040240105627773 4.0356e-08  
a 3.147787637883952 1.8411e-08 au
q 2.820342143391331 1.2792e-07 au
i 7.087480969840994 4.4204e-06 deg
node 32.4206154327223 3.4297e-05 deg
peri 141.1699618085296 3.9625e-05 deg
M 107.3163704163757 2.0102e-05 deg
tp 2457992.406949565790
(2017-Aug-26.90694957)
0.00011329 TDB
period 2039.889136270219
5.58
1.7896e-05
4.9e-08
d
yr
n .1764801790445497 1.5483e-09 deg/d
Q 3.475233132376571 2.0326e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2479  
   data-arc span      23184 days (63.47 yr)  
   first obs. used      1956-05-08  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45125  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:22:30  

Additional Information
 Earth MOID = 1.82945 au 
 Jupiter MOID = 1.4975 au 
 T_jup = 3.188 
[ 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 11.5   n/a MPO435727  
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-January); 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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