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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07927297037074793 4.5816e-08  
a 2.237041649509722 8.6418e-09 au
q 2.059704713110008 1.0381e-07 au
i 4.74174711139986 4.776e-06 deg
node 185.8786867331869 5.9501e-05 deg
peri 55.92575767068973 6.7586e-05 deg
M 75.19025429393758 3.0394e-05 deg
tp 2457145.248334450071
(2015-May-02.74833445)
0.00010337 JED
period 1222.107844438867
3.35
7.0816e-06
1.939e-08
d
yr
n .2945730212257123 1.7069e-09 deg/d
Q 2.414378585909435 9.3269e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1420  
   data-arc span      16766 days (45.90 yr)  
   first obs. used      1969-10-08  
   last obs. used      2015-09-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53714  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 13:12:54  

Additional Information
 Earth MOID = 1.05081 au 
 Jupiter MOID = 2.57794 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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