+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   26437 (1999 YD8) Classification: Main-belt Asteroid          SPK-ID: 2026437 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1781425941891234 2.9032e-08   a 2.202870066529376 7.2636e-09 au q 1.810445078216266 6.58e-08 au i 5.322106339791389 3.0172e-06 deg node 104.7118411420018 3.4552e-05 deg peri 180.2673450071705 3.5837e-05 deg M 273.861721970705 1.1116e-05 deg tp 2459286.242890836721 (2021-Mar-12.74289084) 3.7697e-05 TDB period 1194.212875560793 3.27 5.9066e-06 1.617e-08 d yr n .3014537921733147 1.491e-09 deg/d Q 2.595295054842486 8.5576e-09 au   Orbit Determination Parameters    # obs. used (total)      1951      data-arc span      15380 days (42.11 yr)      first obs. used      1978-05-09      last obs. used      2020-06-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50975      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 01:28:57   Additional Information  Earth MOID = .794005 au   Jupiter MOID = 2.5538 au   T_jup = 3.637  [ 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 14.7   n/a MPO416973   diameter diameter 3.013 km 0.556 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)   geometric albedo albedo 0.173   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   26437 (1999 YD8)          Discovered 1999-Dec-27 by Spacewatch at Kitt Peak Reference: 20010705/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 YD8 = 1978 JA3 = 1997 EQ33 = 1998 QC54  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-28 12:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin