+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   616 Elly (A906 UK) Classification: Main-belt Asteroid          SPK-ID: 2000616 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 42 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05959193895272574 3.5741e-08   a 2.55239501424593 7.9161e-09 au q 2.400292846373745 9.4381e-08 au i 14.95904424024553 6.1751e-06 deg node 355.9866069747117 1.2033e-05 deg peri 109.3994999128297 5.8753e-05 deg M 283.2879227022617 5.6124e-05 deg tp 2459517.881421363675 (2021-Oct-30.38142136) 0.00023228 TDB period 1489.430552733728 4.08 6.9291e-06 1.897e-08 d yr n .2417031121989873 1.1244e-09 deg/d Q 2.704497182118114 8.3879e-09 au   Orbit Determination Parameters    # obs. used (total)      3768      data-arc span      41740 days (114.28 yr)      first obs. used      1906-10-08      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .3577      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:48:15   Additional Information  Earth MOID = 1.45577 au   Jupiter MOID = 2.35877 au   T_jup = 3.389  [ 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 10.66   n/a E2021B10 IRAS observations used: 2 diameter diameter 21.170 km 0.212 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 5.297 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Alvarez-Candal, A.; Duffard, R.; Angeli, C.A.; Lazzaro, D.; Fernandez, S. (2004) Icarus 172, 388-401.] [Durkee, R.I. (2010) Minor Planet Bull. 37, 125-127.] [Warner, B.D. (2010) Minor Planet Bull. 37, 112-118.] [Mikulecka, B. (2011) Entry on CALL site. http://www.minorplanet.info/call.html] [Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.] [Klinglesmith III, D.A.; Hanowell, J.; Risley, E.; Turk, J.; et al. (2014) Minor Planet Bull. 41, 139-143.] [Stephens, R.D. (2014) Minor Planet Bull. 41, 171-175.] [Schmidt, R.E. (2015) Minor Planet Bull. 42, 1-3.] [Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.] [Durech, J.; Hanus, J.; Broz, M.; Lehky, M.; et al. (2017) Icarus 304, 101-109.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] geometric albedo albedo 0.211   0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.889   0.014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=9.54, mean=11.96, max.=14.37) deg. U-B UB 0.442   0.044 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=9.54, mean=11.96, max.=14.37) deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo 616 Elly (A906 UK)          Discovered 1906-Oct-17 by Kopff, A. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  A906 UK = A908 DB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-07 09:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin