+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1503 Kuopio (1938 XD) Classification: Main-belt Asteroid          SPK-ID: 2001503 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1041525361034514 4.8974e-08   a 2.625309942036745 8.6638e-09 au q 2.351877253516014 1.2996e-07 au i 12.36839522301222 5.1505e-06 deg node 316.9598199548944 1.905e-05 deg peri 177.7034569508365 2.9637e-05 deg M 26.83305977536376 2.1064e-05 deg tp 2458884.692416612488 (2020-Feb-05.19241661) 9.0947e-05 TDB period 1553.707641563176 4.25 7.6911e-06 2.106e-08 d yr n .2317038227589626 1.147e-09 deg/d Q 2.898742630557477 9.5662e-09 au   Orbit Determination Parameters    # obs. used (total)      2447      data-arc span      31165 days (85.33 yr)      first obs. used      1935-03-02      last obs. used      2020-06-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .39654      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:18:22   Additional Information  Earth MOID = 1.36591 au   Jupiter MOID = 2.14302 au   T_jup = 3.362  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 10.5   n/a MPO384761   diameter diameter 22.985 km 0.964 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 9.957 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Szekely, P.; Kiss, L.L.; Szabo, Gy.M.; Sarneczky, K.; et al. (2005) Planet. Space Sci. 53, 925-936.] [Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.] [Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.] [Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.399   0.262 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   1503 Kuopio (1938 XD)          Discovered 1938-Dec-15 by Vaisala, Y. at Turku Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1938 XD = 1935 EF = 1953 LH  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-19 02:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin