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2917 Sawyer Hogg (1980 RR)
Classification: Main-belt Asteroid          SPK-ID: 2002917
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1128277207499763 4.9536e-08  
a 2.79443545969368 1.2527e-08 au
q 2.47914567599353 1.3725e-07 au
i 12.82112972936227 4.6452e-06 deg
node 348.6684226933822 1.5886e-05 deg
peri 39.47709833176748 2.3461e-05 deg
M 137.4890450551361 1.739e-05 deg
tp 2458348.863883126220
(2018-Aug-18.36388313)
8.1579e-05 TDB
period 1706.237773202116
4.67
1.1473e-05
3.141e-08
d
yr
n .2109905229236508 1.4188e-09 deg/d
Q 3.109725243393831 1.3941e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2466  
   data-arc span      17919 days (49.06 yr)  
   first obs. used      1971-06-28  
   last obs. used      2020-07-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41642  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:04:51  

Additional Information
 Earth MOID = 1.49499 au 
 Jupiter MOID = 2.40674 au 
 T_jup = 3.282 
[ 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 11.9   n/a MPO452203  
diameter diameter 9.553 km 0.117 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.404   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2917 Sawyer Hogg (1980 RR)          Discovered 1980-Sep-02 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

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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