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1987 Kaplan (1952 RH)
Classification: Main-belt Asteroid          SPK-ID: 2001987
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2275466548813688 2.1158e-08  
a 2.381482608135571 6.7282e-09 au
q 1.839584206996164 5.0115e-08 au
i 23.65175975571028 5.5495e-07 deg
node 314.1901711325854 3.2482e-06 deg
peri 38.34822589398855 1.0244e-05 deg
M 253.0305560266083 6.9336e-06 deg
tp 2459795.365786820631
(2022-Aug-03.86578682)
2.6651e-05 TDB
period 1342.361686867747
3.68
5.6887e-06
1.557e-08
d
yr
n .2681840546567 1.1365e-09 deg/d
Q 2.923381009274978 8.2592e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2527  
   data-arc span      25146 days (68.85 yr)  
   first obs. used      1952-09-11  
   last obs. used      2021-07-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .34359  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:14:51  

Additional Information
 Earth MOID = .866699 au 
 Jupiter MOID = 2.56066 au 
 T_jup = 3.392 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457107.5 (2015-Mar-26.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2277837599719394 2.1257e-08  
q 1.839123666254211 5.0428e-08 au
tp 2457108.656652372067
(2015-Mar-27.15665237)
2.3013e-05 TDB
node 314.2909648684813 3.2404e-06 deg
peri 38.00249512956324 1.0205e-05 deg
i 23.67102790721784 5.5519e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2527  
   data-arc span      25146 days (68.85 yr)  
   first obs. used      1952-09-11  
   last obs. used      2021-07-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .34359  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:14:51  

Additional Information
 Jupiter MOID = 2.56066 au 
 T_jup = 3.392 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.518763530870796E-16 -1.066347222606195E-15 6.244972954026276E-14 4.12110471819904E-15 -2.733871819970825E-14 1.873925194300215E-15
q -1.066347222606195E-15 2.543003651176976E-15 -1.37191509417636E-13 -1.044004538034061E-14 6.944367031085723E-14 -4.431817412483355E-15
tp 6.244972954026276E-14 -1.37191509417636E-13 5.296035894750497E-10 -4.279983383745316E-11 2.166382804802282E-10 5.21976985052434E-13
node 4.12110471819904E-15 -1.044004538034061E-14 -4.279983383745316E-11 1.050015667431426E-11 -2.591040758363788E-11 -1.518009041077788E-13
peri -2.733871819970825E-14 6.944367031085723E-14 2.166382804802282E-10 -2.591040758363788E-11 1.041471719945455E-10 6.453208704961541E-14
i 1.873925194300215E-15 -4.431817412483355E-15 5.21976985052434E-13 -1.518009041077788E-13 6.453208704961541E-14 3.082354259029545E-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 11.64   n/a MPO614063  
diameter diameter 13.017 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.453 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2001) Minor Planet Bull. 28, 40-41.]
[Warner, B.D. (2011) Minor Planet Bull. 38, 63-65.]
[Warner, B.D (2012) Minor Planet Bull. 39, 69-80.]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
[Hanus, J.; Delbo, M.; Durech, J.; Ali-Lagoa, V. (2018) Icarus 309, 297-337.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.262   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1987 Kaplan           Discovered 1952 Sept. 11 by P. F. Shajn at Simeis.
Named in memory of Samuil Aronovich Kaplan (1921-1978), head of the astrophysics department at the Lvov Observatory from 1948 to 1961 and subsequently a staff member of the Scientific Research Radiophysics Institute in Gorkij. He contributed extensively to a wide range of astrophysical topics, including white dwarfs, interstellar matter, radiative transfer, solar radiation, pulsars and galactic nuclei.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5358Last Updated: 2006-03-21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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