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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03881004556993184 3.4879e-08  
a 2.698665249124805 8.3176e-09 au
q 2.59392992782828 9.3541e-08 au
i 7.000018693345296 4.0988e-06 deg
node 203.0717759239491 2.5756e-05 deg
peri 165.8047792892337 5.3698e-05 deg
M 86.89952735865111 4.61e-05 deg
tp 2459005.625925957872
(2020-Jun-05.12592596)
0.00020765 TDB
period 1619.279999929224
4.43
7.4862e-06
2.05e-08
d
yr
n .2223210315793038 1.0278e-09 deg/d
Q 2.80340057042133 8.6404e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3364  
   data-arc span      41662 days (114.06 yr)  
   first obs. used      1907-04-02  
   last obs. used      2021-04-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42529  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 12:05:30  

Additional Information
 Earth MOID = 1.59303 au 
 Jupiter MOID = 2.36054 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 11.46   n/a E2021B10  
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. 2020-October); 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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