+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101294 (1998 SW126) Classification: Main-belt Asteroid          SPK-ID: 2101294 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2358887713659588 5.3802e-08   a 2.790337947990178 1.4873e-08 au q 2.132128557742965 1.4734e-07 au i 8.661242756464288 4.2194e-06 deg node 153.7616143934378 3.5988e-05 deg peri 216.1430135235773 3.7207e-05 deg M 232.4286010756474 1.2073e-05 deg tp 2459603.801565434982 (2022-Jan-24.30156543) 6.0229e-05 TDB period 1702.486336184038 4.66 1.3612e-05 3.727e-08 d yr n .2114554415789943 1.6907e-09 deg/d Q 3.448547338237391 1.8382e-08 au   Orbit Determination Parameters    # obs. used (total)      422      data-arc span      9823 days (26.89 yr)      first obs. used      1993-07-22      last obs. used      2020-06-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57198      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:01:21   Additional Information  Earth MOID = 1.13782 au   Jupiter MOID = 2.02972 au   T_jup = 3.272  [ hide covariance matrix ] Orbital Elements at Epoch 2457386.5 (2015-Dec-30.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .23549178758166 5.3845e-08   q 2.13355469792482 1.4739e-07 au tp 2457902.281035677424 (2017-May-28.78103568) 5.2018e-05 TDB node 153.7699230565726 3.5995e-05 deg peri 216.3967801563544 3.721e-05 deg i 8.659694660867048 4.2186e-06 deg   Orbit Determination Parameters    # obs. used (total)      422      data-arc span      9823 days (26.89 yr)      first obs. used      1993-07-22      last obs. used      2020-06-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57198      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:01:21   Additional Information  Jupiter MOID = 2.02972 au   T_jup = 3.272  Orbit Covariance (6×6)   e q tp node peri i e 2.899234943488867E-15 -7.914062106249861E-15 1.50755275933857E-12 -2.55504449117545E-14 2.505070270877709E-13 -3.977828892566003E-15 q -7.914062106249861E-15 2.172263129916831E-14 -3.904645413831011E-12 7.077012597023663E-14 -6.539629780732677E-13 1.119808121419011E-14 tp 1.50755275933857E-12 -3.904645413831011E-12 2.705883093711335E-9 -3.260398804219632E-11 5.35973687825374E-10 -4.731710602877295E-12 node -2.55504449117545E-14 7.077012597023663E-14 -3.260398804219632E-11 1.295669994554247E-9 -1.28660971964453E-9 4.81309945490116E-11 peri 2.505070270877709E-13 -6.539629780732677E-13 5.35973687825374E-10 -1.28660971964453E-9 1.384592311953761E-9 -4.849111384699247E-11 i -3.977828892566003E-15 1.119808121419011E-14 -4.731710602877295E-12 4.81309945490116E-11 -4.849111384699247E-11 1.779662378144381E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.7   n/a MPO325161   diameter diameter 4.979 km 0.794 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.037   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   101294 (1998 SW126)          Discovered 1998-Sep-26 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 Alternate Designations  1998 SW126 = 2003 WD77  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-20 20:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin