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JPL Small-Body Database Browser
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2890 Vilyujsk (1978 SY7)
Classification: Main-belt Asteroid          SPK-ID: 2002890
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .160563061211412 3.3939e-08  
a 2.259769590984613 7.2394e-09 au
q 1.896934067823663 7.644e-08 au
i 6.61846780879466 5.2247e-06 deg
node 356.729876254331 3.0417e-05 deg
peri 51.33008168575447 3.4137e-05 deg
M 313.7528056616289 1.5039e-05 deg
tp 2458759.896050785001
(2019-Oct-03.39605079)
5.196e-05 TDB
period 1240.779664659362
3.40
5.9624e-06
1.632e-08
d
yr
n .2901401515947899 1.3942e-09 deg/d
Q 2.622605114145562 8.4017e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1858  
   data-arc span      27434 days (75.11 yr)  
   first obs. used      1944-09-20  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47445  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:20:48  

Additional Information
 Earth MOID = .913612 au 
 Jupiter MOID = 2.77748 au 
 T_jup = 3.595 
[ 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 13.1   n/a MPO365280  
diameter diameter 7.983 km 0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.45 h n/a LCDB (Rev. 2019-January); 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:
[Koff, R.A. (2003) Minor Planet Bull. 30, 38-39.]
[Ruthroff, J.C. (2013) Minor Planet Bull. 40, 90-91.]
[Waller, E.B. (2013) Minor Planet Bull. 40, 109-110.]
geometric albedo albedo 0.218   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2890 Vilyujsk (1978 SY7)          Discovered 1978-Sep-26 by Zhuravleva, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1978 SY7 = 1944 SC = 1956 EL = 1961 TR1 = 1983 BP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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