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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07912257900659068 4.7233e-08  
a 2.236725349103872 1.1384e-08 AU
q 2.059749870953357 1.0866e-07 AU
i 4.741629342158218 5.651e-06 deg
node 185.8835588209378 6.0963e-05 deg
peri 55.84147046662419 7.2075e-05 deg
M 317.4222838570284 4.0424e-05 deg
tp 2457145.009792664965
(2015-May-02.50979267)
0.00013758 JED
period 1221.848658690331
3.35
9.3279e-06
2.554e-08
d
yr
n .2946355077934734 2.2493e-09 deg/d
Q 2.413700827254387 1.2284e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1302  
   data-arc span      16546 days (45.30 yr)  
   first obs. used      1969-10-08  
   last obs. used      2015-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54383  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:00:14  

Additional Information
 Earth MOID = 1.0534 AU 
 T_jup = 3.629 
[ 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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