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1201 Strenua (1931 RK)
Classification: Main-belt Asteroid          SPK-ID: 2001201
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03860590384969805 4.0093e-08  
a 2.697695442253259 1.0374e-08 au
q 2.593548471393861 1.1069e-07 au
i 7.001060920093953 4.3725e-06 deg
node 203.0784514828464 3.2028e-05 deg
peri 165.3361619289249 6.1574e-05 deg
M 359.2898687578327 5.3412e-05 deg
tp 2459003.692448670462
(2020-Jun-03.19244867)
0.00024012 TDB
period 1618.407208587042
4.43
9.3357e-06
2.556e-08
d
yr
n .222440927159673 1.2831e-09 deg/d
Q 2.801842413112657 1.0775e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2714  
   data-arc span      41398 days (113.34 yr)  
   first obs. used      1907-04-02  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46357  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:29:53  

Additional Information
 Earth MOID = 1.59339 au 
 Jupiter MOID = 2.36292 au 
 T_jup = 3.357 
[ 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 11.4   n/a MPO347524  
diameter diameter 35.825 km 0.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 14.775 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.037   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B Xc   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)

1201 Strenua (1931 RK)          Discovered 1931-Sep-14 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1931 RK = 1931 TC = A907 GV = A909 UC = A916 FB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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