+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   441522 (2008 SX181) Classification: Main-belt Asteroid          SPK-ID: 2441522 [ 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 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1516952071220414 8.4158e-08   a 2.418804402683826 2.1064e-08 au q 2.051883367830998 2.0819e-07 au i 2.082643705665883 9.8985e-06 deg node 141.7845258405347 0.00017453 deg peri 196.7322136624267 0.00019941 deg M 73.72568449759552 7.2226e-05 deg tp 2458719.105331226693 (2019-Aug-23.60533123) 0.00027778 TDB period 1374.040559253056 3.76 1.7949e-05 4.914e-08 d yr n .2620009995889059 3.4225e-09 deg/d Q 2.785725437536655 2.426e-08 au   Orbit Determination Parameters    # obs. used (total)      79      data-arc span      5501 days (15.06 yr)      first obs. used      2004-09-10      last obs. used      2019-10-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56173      source      ORB      producer      Otto Matic      solution date      2019-Nov-08 15:57:17   Additional Information  Earth MOID = 1.04288 au   Jupiter MOID = 2.58411 au   T_jup = 3.498  [ hide covariance matrix ] Orbital Elements at Epoch 2457417.5 (2016-Jan-30.0) TDB Reference: JPL 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .152997028996566 8.4321e-08   q 2.048463475866313 2.0917e-07 au tp 2457345.507588531053 (2015-Nov-19.00758853) 0.00028404 TDB node 141.8342356840078 0.00017456 deg peri 196.770364099453 0.00019891 deg i 2.082714803675087 9.9011e-06 deg   Orbit Determination Parameters    # obs. used (total)      79      data-arc span      5501 days (15.06 yr)      first obs. used      2004-09-10      last obs. used      2019-10-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56173      source      ORB      producer      Otto Matic      solution date      2019-Nov-08 15:57:17   Additional Information  Jupiter MOID = 2.58411 au   T_jup = 3.498  Orbit Covariance (6×6)   e q tp node peri i e 7.110005003895378E-15 -1.757405328545147E-14 1.909527217054791E-12 1.980888631161615E-14 6.38722313068607E-13 -9.56506805127712E-15 q -1.757405328545147E-14 4.37514550222319E-14 -7.910894684454882E-12 -6.878987489895303E-14 -2.642395764158694E-12 2.501403008997267E-14 tp 1.909527217054791E-12 -7.910894684454882E-12 8.067656891601255E-8 4.960287019536818E-10 2.711021401039129E-8 -2.46222814214937E-11 node 1.980888631161615E-14 -6.878987489895303E-14 4.960287019536818E-10 3.047272042084096E-8 -3.028120669710079E-8 2.740791726184949E-10 peri 6.38722313068607E-13 -2.642395764158694E-12 2.711021401039129E-8 -3.028120669710079E-8 3.95659186548279E-8 -2.822920625634661E-10 i -9.56506805127712E-15 2.501403008997267E-14 -2.46222814214937E-11 2.740791726184949E-10 -2.822920625634661E-10 9.803201842662069E-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 18.1   n/a MPO495187   441522 (2008 SX181)          Discovered 2008-Sep-24 by Mt. Lemmon Survey at Mount Lemmon Reference: Last Updated: 2015-09-02 Alternate Designations  2008 SX181 = 2004 RC243  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-27 11:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin