+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   148 Gallia (A875 PA) Classification: Main-belt Asteroid          SPK-ID: 2000148 [ 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 49 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .187225391551316 2.9366e-08   a 2.771526319596235 6.3249e-09 au q 2.252626219215053 8.0189e-08 au i 25.29192478852348 4.6621e-06 deg node 145.0008441395773 7.1083e-06 deg peri 252.7195672133854 1.4395e-05 deg M 89.54911033370587 1.3707e-05 deg tp 2458581.286063166787 (2019-Apr-07.78606317) 6.3683e-05 TDB period 1685.29890132423 4.61 5.769e-06 1.579e-08 d yr n .2136119591113058 7.3122e-10 deg/d Q 3.290426419977418 7.509e-09 au   Orbit Determination Parameters    # obs. used (total)      3196      data-arc span      51505 days (141.01 yr)      first obs. used      1879-06-14      last obs. used      2020-06-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45182      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:32:53   Additional Information  Earth MOID = 1.37367 au   Jupiter MOID = 2.46089 au   T_jup = 3.174  [ 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 7.6   n/a MPO502154 IRAS observations used: 14 diameter diameter 97.75 km 3.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 14 rotation period rot_per 20.664 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Surdej, A.; Surdej, J. (1979) Astron. Astrophys. Suppl. Ser. 37, 471-474.] [Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Warner, B.D. (2007) Minor Planet Bull. 34, 104-107.] [Warner, B.D. (2011) http://www.minorplanetobserver.com/PDO/PDOLightcurves.htm] [Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.1640   0.013 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 14 B-V BV 0.858   0.016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=9.40, mean=14.81, max.=20.46) deg. U-B UB 0.423   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=9.40, mean=14.81, max.=20.46) deg. Tholen spectral type spec_T GU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 148 Gallia (A875 PA)          Discovered 1875-Aug-07 by Henry, Prosper at Paris In their cooperative program it will probably never be known which of the Henry brothers discovered which planet. With strict impartiality, these discoveries were announced as having been made alternatively by Prosper and by Paul. Note: "planet" implies "minor planet" Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Nov-24 22:15 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin