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2890 Vilyujsk (1978 SY7)
Classification: Main-belt Asteroid          SPK-ID: 2002890
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1605034915446079 5.3542e-08  
a 2.259949617929321 9.6833e-09 AU
q 1.897219813536762 1.2295e-07 AU
i 6.625158263572025 7.0868e-06 deg
node 356.804597716582 3.8658e-05 deg
peri 50.81397005634366 4.3209e-05 deg
M 210.1975142145955 1.9097e-05 deg
tp 2457516.872472336703
(2016-May-08.37247234)
6.6636e-05 JED
period 1240.927939657228
3.40
7.9756e-06
2.184e-08
d
yr
n .2901054835621157 1.8645e-09 deg/d
Q 2.622679422321879 1.1238e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1136  
   data-arc span      25890 days (70.88 yr)  
   first obs. used      1944-09-20  
   last obs. used      2015-08-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52432  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:07:04  

Additional Information
 Earth MOID = .913862 AU 
 T_jup = 3.595 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0 mag n/a MPO256884  
rotation period rot_per 3.45 h n/a LCDB (Rev. 2015-July); 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 Bul. 30, 38-39.]
[Ruthroff, J.C. (2013) Minor Planet Bul. 40, 90-91.]
[Waller, E.B. (2013) Minor Planet Bul. 40, 109-110.]

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 | Physical Parameters | Discovery Circumstances ]
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