+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1563 Noel (1943 EG) Classification: Main-belt Asteroid          SPK-ID: 2001563 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 42 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08562783467481283 1.7749e-08   a 2.19119456686498 4.572e-09 au q 2.003567320753117 3.8564e-08 au i 5.982079276529317 4.5397e-07 deg node 53.63768236013497 9.393e-06 deg peri 115.9251320435564 1.3772e-05 deg M 52.16177678298363 1.291e-05 deg tp 2459224.839759746613 (2021-Jan-10.33975975) 4.2446e-05 TDB period 1184.731240048155 3.24 3.708e-06 1.015e-08 d yr n .3038663857512251 9.5104e-10 deg/d Q 2.378821812976843 4.9635e-09 au   Orbit Determination Parameters    # obs. used (total)      3046      data-arc span      33352 days (91.31 yr)      first obs. used      1930-03-07      last obs. used      2021-06-29      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .38219      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 12:31:21   Additional Information  Earth MOID = 1.01759 au   Jupiter MOID = 2.59086 au   T_jup = 3.661  [ 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 12.50   n/a E2021B10   diameter diameter 7.234 km 0.514 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 3.5495 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2008) http://www.asu.cas.cz/~ppravec/neo.htm] [Oey, J. (2009) Minor Planet Bull. 36, 4-6.] [Pravec, P.; Wolf, M.; Sarounova, L. (2011) http://www.asu.cas.cz/~ppravec/neo.htm] [Pravec, P.; Wolf, M.; Sarounova, L. (2013) http://www.asu.cas.cz/~ppravec/neo.htm] [Pravec, P.; Wolf, M.; Sarounova, L. (2015) http://www.asu.cas.cz/~ppravec/neo.htm] [Apostolovska, G.; Kostov, A.; Donchev, Z.; Ovcharov, E. (2017) Minor Planet Bull. 44, 143.] [Oey, J.; Williams, H.; Groom, R.; Pray, D.; Benishek, V. (2017) Minor Planet Bull. 44, 193-199.] [Stephens, R.D.; Warner, B.D. (2020) Minor Planet Bull. 47, 125-133.] geometric albedo albedo 0.370   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   SMASSII spectral type spec_B Sa   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 1563 Noel (1943 EG)          Discovered 1943-Mar-07 by Arend, S. at Uccle Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1943 EG = 1930 EF  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-29 10:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin