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

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0795892656893006 3.5493e-08  
a 2.236657349246348 5.9959e-09 au
q 2.058643433221254 7.9502e-08 au
i 4.741197932001478 4.0883e-06 deg
node 185.8604595062616 4.201e-05 deg
peri 55.57345793509877 4.8224e-05 deg
M 69.04336404739192 2.3261e-05 deg
tp 2458366.175847920650
(2018-Sep-04.67584792)
7.895e-05 TDB
period 1221.79294002336
3.35
4.913e-06
1.345e-08
d
yr
n .294648944356412 1.1848e-09 deg/d
Q 2.414671265271442 6.4731e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2353  
   data-arc span      18282 days (50.05 yr)  
   first obs. used      1969-10-08  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47065  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:09:20  

Additional Information
 Earth MOID = 1.05062 au 
 Jupiter MOID = 2.57943 au 
 T_jup = 3.629 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8   n/a MPO250216  
diameter diameter 6.620 km 0.252 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.960 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Hayes-Gehrke, M.N.; Stoeckel, B.; Vishnu, S.; Rhoades, D.; et al. (2018) Minor Planet Bull. 45, 318-319.]
geometric albedo albedo 0.335   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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