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2216 Kerch (1971 LF)
Classification: Main-belt Asteroid          SPK-ID: 2002216
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 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09626432754914767 2.1456e-08  
a 3.020778769524933 1.2736e-08 au
q 2.729985532601873 6.3444e-08 au
i 10.43532454835607 7.7258e-07 deg
node 155.5503906495162 1.6355e-06 deg
peri 183.0865888251737 8.5382e-06 deg
M 119.8047898765874 7.6265e-06 deg
tp 2458758.312213643071
(2019-Oct-01.81221364)
3.8979e-05 TDB
period 1917.682951784821
5.25
1.2128e-05
3.32e-08
d
yr
n .1877265476365328 1.1872e-09 deg/d
Q 3.311572006447993 1.3962e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3258  
   data-arc span      30386 days (83.19 yr)  
   first obs. used      1938-02-16  
   last obs. used      2021-04-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42939  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:28:16  

Additional Information
 Earth MOID = 1.7201 au 
 Jupiter MOID = 2.07551 au 
 T_jup = 3.214 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457213.5 (2015-Jul-10.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09984715958054446 2.169e-08  
q 2.716400296976294 6.4404e-08 au
tp 2456836.538765619879
(2014-Jun-28.03876562)
3.3174e-05 TDB
node 155.752851395792 1.6267e-06 deg
peri 181.9517927438024 7.975e-06 deg
i 10.45149425610195 7.7432e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3258  
   data-arc span      30386 days (83.19 yr)  
   first obs. used      1938-02-16  
   last obs. used      2021-04-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42939  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:28:16  

Additional Information
 Jupiter MOID = 2.07551 au 
 T_jup = 3.214 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.704616721297125E-16 -1.375628127832508E-15 -3.549988853525931E-13 -8.169816133276209E-15 -9.740578839078234E-14 1.98895556989554E-15
q -1.375628127832508E-15 4.147874129916132E-15 1.10632375630643E-12 2.510347927917311E-14 3.017234728281601E-13 -5.91687983865584E-15
tp -3.549988853525931E-13 1.10632375630643E-12 1.100503830526683E-9 -1.639788982973595E-11 2.612374545046717E-10 -1.864999190237015E-13
node -8.169816133276209E-15 2.510347927917311E-14 -1.639788982973595E-11 2.646100742907513E-12 -4.540675491299513E-12 7.184811504192697E-13
peri -9.740578839078234E-14 3.017234728281601E-13 2.612374545046717E-10 -4.540675491299513E-12 6.360096940278686E-11 -7.863560039627903E-13
i 1.98895556989554E-15 -5.91687983865584E-15 -1.864999190237015E-13 7.184811504192697E-13 -7.863560039627903E-13 5.995644640501348E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.25   n/a E2021B10  
diameter diameter 18.024 km 0.187 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.462 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Krotz, J.; Albers, K.; Carbo, L.; Kragh, K.; et al. (2010) Minor Planet Bull. 37, 99-101.]
geometric albedo albedo 0.120   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2216 Kerch           Discovered 1971 June 12 by T. M. Smirnova at the Crimean Astrophysical Observatory.
Named for the hero city in the Crimea.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5850Last Updated: 2006-03-21

Alternate Designations
 1971 LF = 1930 QF = 1935 QF1 = 1938 DJ = 1959 CG1 = 1970 FK = 1975 ES2 = 1977 RB4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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