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4287 Trisov (1989 RU2)
Classification: Main-belt Asteroid          SPK-ID: 2004287
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1870656327331221 4.8292e-08  
a 2.207798274192819 9.0352e-09 au
q 1.794795093083844 1.0719e-07 au
i 5.483156570864755 5.4802e-06 deg
node 52.92063906281211 5.4078e-05 deg
peri 257.5446432208692 5.5994e-05 deg
M 98.28547718402474 1.4912e-05 deg
tp 2457273.366996587269
(2015-Sep-07.86699659)
4.9084e-05 JED
period 1198.222612360933
3.28
7.3554e-06
2.014e-08
d
yr
n .3004450060332857 1.8443e-09 deg/d
Q 2.620801455301793 1.0725e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1264  
   data-arc span      24358 days (66.69 yr)  
   first obs. used      1949-04-20  
   last obs. used      2015-12-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48982  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:06:10  

Additional Information
 Earth MOID = .78985 au 
 Jupiter MOID = 2.64016 au 
 T_jup = 3.631 
[ 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 13.3 mag n/a MPO253392  
rotation period rot_per 5.494 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Skiff, B.A. (2011) Posting on CALL web site. http://www.minorplanet.info/call.html]
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)

4287 Trisov (1989 RU2)          Discovered 1989-Sep-07 by Mrkos, A. at Klet
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1989 RU2 = 1949 HM = 1953 TU2 = 1953 UK1 = 1972 JS1 = 1972 KN = 1986 WH8 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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