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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0793566604419772 3.4256e-08  
a 2.236978654571883 5.7088e-09 au
q 2.059459499065071 7.6603e-08 au
i 4.740759816230677 3.9501e-06 deg
node 185.8568494976915 4.0357e-05 deg
peri 55.62442714718844 4.6272e-05 deg
M 186.8575468694357 2.2636e-05 deg
tp 2459588.249478694335
(2022-Jan-08.74947869)
7.7053e-05 TDB
period 1222.056223093962
3.35
4.678e-06
1.281e-08
d
yr
n .2945854643975085 1.1277e-09 deg/d
Q 2.414497810078696 6.1618e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2635  
   data-arc span      18651 days (51.06 yr)  
   first obs. used      1969-10-08  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45735  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:14:48  

Additional Information
 Earth MOID = 1.05155 au 
 Jupiter MOID = 2.57895 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 5.957 h n/a LCDB (Rev. 2019-August); 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.]
[Loera-González, P.; Olguín, L.; Contreras, M.E.; Saucedo M.; et al. (2019) Minor Planet Bull. 46, 283-285.]
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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