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1856 Ruzena (1969 TW1)
Classification: Main-belt Asteroid          SPK-ID: 2001856
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07923656778298643 4.7278e-08  
a 2.237478889137247 1.1683e-08 AU
q 2.060188741475122 1.0882e-07 AU
i 4.740353134437679 5.6593e-06 deg
node 185.8943398266964 6.134e-05 deg
peri 55.59412011625081 7.2628e-05 deg
M 258.752200186828 4.0982e-05 deg
tp 2457144.311136653744
(2015-May-01.81113665)
0.00014016 JED
period 1222.46616147451
3.35
9.5745e-06
2.621e-08
d
yr
n .2944866789325085 2.3065e-09 deg/d
Q 2.414769036799372 1.2609e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1293  
   data-arc span      16260 days (44.52 yr)  
   first obs. used      1969-10-08  
   last obs. used      2014-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54557  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 17:35:09  

Additional Information
 Earth MOID = 1.05233 AU 
 T_jup = 3.628 
[ 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 12.8 mag n/a MPO250216  
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)

1856 Ruzena (1969 TW1)          Discovered 1969-Oct-08 by Chernykh, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1969 TW1 = 1941 FP = 1971 DL1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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