+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1003 Lilofee (A923 RV) Classification: Main-belt Asteroid          SPK-ID: 2001003 [ 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 45 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1597621998111228 3.0955e-08   a 3.14067258313198 1.2013e-08 au q 2.638911822364334 9.7655e-08 au i 1.840287078073316 3.9721e-06 deg node 139.4372777539981 0.00011241 deg peri 317.0652123552181 0.00011314 deg M 64.13335119871068 1.2334e-05 deg tp 2458838.328847566925 (2019-Dec-20.82884757) 6.9243e-05 TDB period 2032.97679661137 5.57 1.1664e-05 3.193e-08 d yr n .177080230625386 1.016e-09 deg/d Q 3.642433343899627 1.3932e-08 au   Orbit Determination Parameters    # obs. used (total)      3116      data-arc span      35560 days (97.36 yr)      first obs. used      1923-09-13      last obs. used      2021-01-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44667      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:51:39   Additional Information  Earth MOID = 1.65589 au   Jupiter MOID = 1.53562 au   T_jup = 3.190  [ 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 10.82   n/a E2021B10   diameter diameter 33.678 km 0.334 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 8.255 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.] [Stephens, R.D. (2014) Minor Planet Bull. 41, 92-95.] [Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.] geometric albedo albedo 0.130   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   1003 Lilofee (A923 RV)          Discovered 1923-Sep-13 by Reinmuth, K. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A923 RV = 1937 FB = 1940 TA = 1951 QO = 1951 RA2 = 1957 WD2 = 1962 QH = A915 HB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-03 03:56 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin