+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101548 (1998 YS29) Classification: Main-belt Asteroid          SPK-ID: 2101548 [ 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 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2043095347906679 3.5321e-08   a 2.453214293921842 9.6783e-09 au q 1.951999222788854 8.8382e-08 au i 9.112245290917496 5.062e-06 deg node 7.936247687060056 2.427e-05 deg peri 84.48500767437216 2.7312e-05 deg M 226.4030741617458 1.5024e-05 deg tp 2459521.329554903004 (2021-Nov-02.82955490) 6.016e-05 TDB period 1403.465226378682 3.84 8.3054e-06 2.274e-08 d yr n .256507958468552 1.5179e-09 deg/d Q 2.954429365054831 1.1656e-08 au   Orbit Determination Parameters    # obs. used (total)      970      data-arc span      7966 days (21.81 yr)      first obs. used      1998-12-27      last obs. used      2020-10-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55184      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:59:56   Additional Information  Earth MOID = .993062 au   Jupiter MOID = 2.30846 au   T_jup = 3.448  [ 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 15.1   n/a MPO341287   diameter diameter 2.612 km 0.191 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.311   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   101548 (1998 YS29)          Discovered 1998-Dec-27 by LONEOS at Anderson Mesa Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1998 YS29 = 2001 PF22  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Dec-05 01:00 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin