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4278 Harvey (1982 SF)
Classification: Main-belt Asteroid          SPK-ID: 2004278
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1765978923389427 1.8095e-08  
a 2.267173985340468 6.3236e-09 au
q 1.86679583796366 4.2772e-08 au
i 5.476828697596903 5.8304e-07 deg
node 146.4216112687482 9.7399e-06 deg
peri 235.3290801988148 1.005e-05 deg
M 54.61218249476276 6.685e-06 deg
tp 2459011.347217906907
(2020-Jun-10.84721791)
2.2788e-05 TDB
period 1246.882992820213
3.41
5.2167e-06
1.428e-08
d
yr
n .2887199537349918 1.2079e-09 deg/d
Q 2.667552132717276 7.4403e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2402  
   data-arc span      24403 days (66.81 yr)  
   first obs. used      1954-05-28  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46127  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:31:30  

Additional Information
 Earth MOID = .874203 au 
 Jupiter MOID = 2.79999 au 
 T_jup = 3.589 
[ 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 13.75   n/a MPCxxxxx  
rotation period rot_per 9.647 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]

4278 Harvey (1982 SF)          Discovered 1982-Sep-22 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1982 SF = 1977 EQ2 = 1987 BQ1 = 1987 BU3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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