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2785 Sedov (1978 QN2)
Classification: Main-belt Asteroid          SPK-ID: 2002785
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.


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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 .04428817137831319 3.4715e-08  
a 2.872804675731066 1.3672e-08 au
q 2.745573409915869 1.014e-07 au
i 1.437914699748156 4.8205e-06 deg
node 334.4056845937866 0.00016012 deg
peri 94.99070151930897 0.00017009 deg
M 47.42574073133309 5.6602e-05 deg
tp 2458366.201667728829
(2018-Sep-04.70166773)
0.00027963 TDB
period 1778.51517587147
4.87
1.2696e-05
3.476e-08
d
yr
n .2024160405736209 1.445e-09 deg/d
Q 3.000035941546263 1.4277e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2219  
   data-arc span      32063 days (87.78 yr)  
   first obs. used      1932-02-14  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46264  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:39:54  

Additional Information
 Earth MOID = 1.75981 au 
 Jupiter MOID = 2.12774 au 
 T_jup = 3.295 
[ 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 12.4   n/a MPO452201  
diameter diameter 9.438 km 0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.49 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Polishook, D. (2009) Minor Planet Bull. 36, 104-107.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Szabo, R.; Pal, A.; Sarneczky, K.; Szabo, Gy.M.; et al. (2016) Astron. Astrophys. 596, A40.]
geometric albedo albedo 0.261   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2785 Sedov (1978 QN2)          Discovered 1978-Aug-31 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1978 QN2 = 1932 CX = 1954 UO = 1966 CG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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