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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04424558821191651 3.2317e-08  
a 2.871751712245085 1.1557e-08 au
q 2.744689368538223 9.1773e-08 au
i 1.438217607460673 4.4354e-06 deg
node 334.4064654201707 0.00014528 deg
peri 94.49407186808079 0.00015474 deg
M 128.9163522717908 5.3826e-05 deg
tp 2458363.962099083050
(2018-Sep-02.46209908)
0.00026495 TDB
period 1777.537451936148
4.87
1.073e-05
2.938e-08
d
yr
n .2025273783164889 1.2226e-09 deg/d
Q 2.998814055951948 1.2069e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2656  
   data-arc span      32328 days (88.51 yr)  
   first obs. used      1932-02-14  
   last obs. used      2020-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43519  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:06:05  

Additional Information
 Earth MOID = 1.75912 au 
 Jupiter MOID = 2.12833 au 
 T_jup = 3.296 
[ 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-August); 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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