+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   203 Pompeja (A879 SA) Classification: Main-belt Asteroid          SPK-ID: 2000203 [ 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 113 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05888228862731659 3.4857e-08   a 2.737416847426264 7.7771e-09 au q 2.576231478522832 9.5509e-08 au i 3.172120498014531 4.085e-06 deg node 347.7201830893624 7.0058e-05 deg peri 59.85384174168718 7.8765e-05 deg M 33.09686450420756 3.5402e-05 deg tp 2459048.412268618282 (2020-Jul-17.91226862) 0.00016264 TDB period 1654.283090486051 4.53 7.0499e-06 1.93e-08 d yr n .2176169254648109 9.2739e-10 deg/d Q 2.898602216329696 8.2351e-09 au   Orbit Determination Parameters    # obs. used (total)      3144      data-arc span      51613 days (141.31 yr)      first obs. used      1879-09-26      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41521      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:44:26   Additional Information  Earth MOID = 1.58637 au   Jupiter MOID = 2.32017 au   T_jup = 3.347  [ 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 8.85   n/a E2021B10 IRAS observations used: 13 diameter diameter 124.592 km 1.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 24.052 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pilcher, F.; Ferrero, A.; Hamanowa, H; Hamanowa, H. (2012) Minor Planet Bull. 39, 99.] geometric albedo albedo 0.036   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.702   0.023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.37 deg. U-B UB 0.293   0.036 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.14, mean=7.26, max.=8.37) deg. Tholen spectral type spec_T DCX:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices 203 Pompeja (A879 SA)          Discovered 1879-Sep-25 by Peters, C. H. F. at Clinton Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A879 SA = A895 EA  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-25 17:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin