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JPL Small-Body Database Browser
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1723 Klemola (1936 FX)
Classification: Main-belt Asteroid          SPK-ID: 2001723
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04137917013085874 3.9323e-08  
a 3.012362872741945 1.3949e-08 au
q 2.887713796934873 1.2079e-07 au
i 10.93617336012064 4.3599e-06 deg
node 149.8092232254181 2.2102e-05 deg
peri 1.514847524167814 5.5282e-05 deg
M 39.39681754375266 5.1208e-05 deg
tp 2458791.513613564871
0.00027148 TDB
period 1909.674532291677
n .1885137985099415 1.3094e-09 deg/d
Q 3.137011948549016 1.4526e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2728  
   data-arc span      32445 days (88.83 yr)  
   first obs. used      1931-03-10  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4571  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 18:12:32  

Additional Information
 Earth MOID = 1.89843 au 
 Jupiter MOID = 1.85084 au 
 T_jup = 3.220 
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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 10.1   n/a MPO502170 IRAS observations used: 12
diameter diameter 33.449 km 0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 6.2545 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site,]
[Behrend, R. (2011) Observatoire de Geneve web site,]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Hanus, J.; Delbo, M.; Ali-Lagoa, V.; Bolin, B.; et al. (2016) Astron. Astrophys., submitted.]
[Brines, P.; Lozano, J.; Rodrigo, O.; Fornas, A.; et al. (2017) Minor Planet Bull. 44, 145-149.]
[Hanus, J.; Delbo, M.; Ali-Lagoa, V.; Bolin, B.; et al. (2018) Icarus 299, 84-96.]
geometric albedo albedo 0.156   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
B-V BV 0.760   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.73 deg.
U-B UB 0.440   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.73 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

1723 Klemola           Discovered 1936 Mar. 18 by Y. Vaisala at Turku.
Named in honor of Irja Klemola, formerly rector of a school in Turku, one of the founders and for many years secretary of the society Torun Ursa for amateur astronomers; she also frequently participated in the minor planet program at the Turku Observatory. This planet also honors Arnold R. Klemola, currently in charge of the proper-motion program at the Lick Observatory, also well known for his astrometric observations of comets and minor planets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5281Last Updated: 2007-10-23

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Alternate Designations
 1936 FX = 1929 WE1 = 1931 FB = 1936 DJ = 1941 BF = 1942 HK = 1947 GG = 1949 UZ = 1955 XT = 1957 DE = 1957 DF = 1958 LB = 1959 PC = 1964 PF = 1965 TC = 1968 KV = A913 UF = A915 CD = A916 KB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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