+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   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 ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .04122696957076107 3.7858e-08   a 3.011987265614949 1.188e-08 au q 2.887812158267922 1.1429e-07 au i 10.9363598966313 4.2054e-06 deg node 149.8101956831769 1.9947e-05 deg peri 1.443597991790256 5.1276e-05 deg M 77.18528181425167 4.6341e-05 deg tp 2458791.135557215673 (2019-Nov-03.63555722) 0.00024611 TDB period 1909.317371633236 5.23 1.1296e-05 3.093e-08 d yr n .188549062271431 1.1155e-09 deg/d Q 3.136162372961976 1.237e-08 au   Orbit Determination Parameters    # obs. used (total)      3151      data-arc span      32822 days (89.86 yr)      first obs. used      1931-03-10      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4284      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 19:04:45   Additional Information  Earth MOID = 1.89835 au   Jupiter MOID = 1.85084 au   T_jup = 3.220  [ show covariance matrix ] [ 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 10.19   n/a E2021B10 IRAS observations used: 12 diameter diameter 33.449 km 0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 6.2545 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [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.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] geometric albedo albedo 0.156   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   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 5281 Last Updated: 2007-10-23 [ show close-approach data ] 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 ] 2021-Mar-02 21:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin