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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 ]

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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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1130339747737612 2.0113e-08  
a 2.793867799008043 1.2153e-08 au
q 2.478065816693744 5.7518e-08 au
i 12.82227095342152 6.7595e-07 deg
node 348.6701328562725 2.1696e-06 deg
peri 39.42877486812377 9.1236e-06 deg
M 179.7424953978993 1.1795e-05 deg
tp 2458348.861137534246
(2018-Aug-18.36113753)
5.376e-05 TDB
period 1705.717892749667
4.67
1.113e-05
3.047e-08
d
yr
n .2110548300690389 1.3771e-09 deg/d
Q 3.109669781322342 1.3527e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2573  
   data-arc span      18165 days (49.73 yr)  
   first obs. used      1971-06-28  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41356  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:37:29  

Additional Information
 Earth MOID = 1.49253 au 
 Jupiter MOID = 2.40773 au 
 T_jup = 3.282 
[ 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 11.96   n/a E2021B10  
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
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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