Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
1987 Kaplan (1952 RH)
Classification: Main-belt Asteroid          SPK-ID: 2001987
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2271855960444744 5.1262e-08  
a 2.382202871635081 7.4269e-09 au
q 1.841000692343807 1.2356e-07 au
i 23.6509676464564 6.6951e-06 deg
node 314.1891839333711 9.5739e-06 deg
peri 38.3196579337998 1.5587e-05 deg
M 146.8861701478928 1.306e-05 deg
tp 2458452.544930542078
(2018-Nov-30.04493054)
4.7523e-05 TDB
period 1342.97071539299
3.68
6.2804e-06
1.719e-08
d
yr
n .2680624349240959 1.2536e-09 deg/d
Q 2.923405050926356 9.1142e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2220  
   data-arc span      24737 days (67.73 yr)  
   first obs. used      1952-09-11  
   last obs. used      2020-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35422  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:39:37  

Additional Information
 Earth MOID = .868767 au 
 Jupiter MOID = 2.56011 au 
 T_jup = 3.391 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456876.5 (2014-Aug-07.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2278454666011904 5.1526e-08  
q 1.838996083010705 1.2439e-07 au
tp 2457108.696848629883
(2015-Mar-27.19684863)
4.4599e-05 TDB
node 314.2912981142409 9.5666e-06 deg
peri 38.02282559214927 1.5518e-05 deg
i 23.67081264536218 6.6968e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2220  
   data-arc span      24737 days (67.73 yr)  
   first obs. used      1952-09-11  
   last obs. used      2020-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35422  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:39:37  

Additional Information
 Jupiter MOID = 2.56011 au 
 T_jup = 3.391 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.654977385601274E-15 -6.403129472614105E-15 -1.094093754516262E-12 7.15315671984348E-15 -3.595043030230781E-13 -3.328308052954685E-15
q -6.403129472614105E-15 1.547373504022277E-14 2.699043108030361E-12 -1.815483306823237E-14 8.801257092091213E-13 9.191422277563849E-15
tp -1.094093754516262E-12 2.699043108030361E-12 1.989057085166143E-9 -1.192516676356463E-11 5.508622549928513E-10 -3.34469672726966E-13
node 7.15315671984348E-15 -1.815483306823237E-14 -1.192516676356463E-11 9.15203723930164E-11 -8.586684276705267E-11 -3.805987838395926E-13
peri -3.595043030230781E-13 8.801257092091213E-13 5.508622549928513E-10 -8.586684276705267E-11 2.408175991108875E-10 1.406177986306249E-13
i -3.328308052954685E-15 9.191422277563849E-15 -3.34469672726966E-13 -3.805987838395926E-13 1.406177986306249E-13 4.484723847392131E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.6   n/a MPO502172  
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. 2019-August); 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.]
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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-30 04:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin