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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1869196452204108 4.993e-08  
a 2.207705363918925 9.6213e-09 AU
q 1.795041860544002 1.1012e-07 AU
i 5.483117973707509 5.6585e-06 deg
node 52.92556860736259 5.5839e-05 deg
peri 257.6137737586616 5.7858e-05 deg
M 277.9649309019605 1.6029e-05 deg
tp 2457273.527972209429
(2015-Sep-08.02797221)
5.3964e-05 JED
period 1198.146976361154
3.28
7.8324e-06
2.144e-08
d
yr
n .3004639723695184 1.9642e-09 deg/d
Q 2.620368867293849 1.142e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1232  
   data-arc span      24140 days (66.09 yr)  
   first obs. used      1949-04-20  
   last obs. used      2015-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4842  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 15:47:04  

Additional Information
 Earth MOID = .791523 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. 2015-May); 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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