+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17604 (1995 SO26) Classification: Main-belt Asteroid          SPK-ID: 2017604 [ 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 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05127705074321689 3.1597e-08   a 2.999052982022221 1.5426e-08 au q 2.845270390081472 9.1985e-08 au i 9.908781749477996 3.1654e-06 deg node 196.5142467442091 2.0257e-05 deg peri 278.6903760158713 3.9891e-05 deg M 217.6167449342496 3.6428e-05 deg tp 2459950.793269488451 (2023-Jan-06.29326949) 0.00019374 TDB period 1897.031900914976 5.19 1.4637e-05 4.007e-08 d yr n .1897701350337677 1.4642e-09 deg/d Q 3.152835573962971 1.6217e-08 au   Orbit Determination Parameters    # obs. used (total)      1789      data-arc span      9225 days (25.26 yr)      first obs. used      1995-09-19      last obs. used      2020-12-21      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48231      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 02:07:49   Additional Information  Earth MOID = 1.88269 au   Jupiter MOID = 1.92132 au   T_jup = 3.229  [ 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 13.63   n/a E2021B10   diameter diameter 5.872 km 0.223 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.224   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   17604 (1995 SO26)          Discovered 1995-Sep-19 by Spacewatch at Kitt Peak Reference: 20001013/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1995 SO26 = 1998 ET2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-18 18:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin