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2737 Kotka (1938 DU)
Classification: Main-belt Asteroid          SPK-ID: 2002737
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1956818491802382 2.2433e-08  
a 2.744808289422706 1.0551e-08 au
q 2.207699127703224 6.0847e-08 au
i 8.825223002986659 1.1034e-06 deg
node 339.450018008265 4.1168e-06 deg
peri 105.2601326131907 6.7258e-06 deg
M 129.0708833706881 4.2144e-06 deg
tp 2458604.985646701763
(2019-May-01.48564670)
1.6873e-05 TDB
period 1660.987835433473
4.55
9.5768e-06
2.622e-08
d
yr
n .2167384927933862 1.2497e-09 deg/d
Q 3.281917451142187 1.2615e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2675  
   data-arc span      30344 days (83.08 yr)  
   first obs. used      1938-02-22  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36794  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:29:16  

Additional Information
 Earth MOID = 1.24295 au 
 Jupiter MOID = 2.00386 au 
 T_jup = 3.303 
[ 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 11.86   n/a E2021B10  
diameter diameter 12.766 km 0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.157 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]
geometric albedo albedo 0.236   0.026 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)

2737 Kotka (1938 DU)          Discovered 1938-Feb-22 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1938 DU = 1927 TG = 1952 HC1 = 1977 QC = 1977 TK3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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