+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   241 Germania (A884 RA) Classification: Main-belt Asteroid          SPK-ID: 2000241 [ 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 110 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1031750376193924 3.1377e-08   a 3.04876982456824 7.9218e-09 au q 2.734212883225543 9.6577e-08 au i 5.505077360148784 3.6554e-06 deg node 270.3453576847112 3.5741e-05 deg peri 80.41153581809866 3.9858e-05 deg M 177.2739279762849 1.8536e-05 deg tp 2458043.024323975939 (2017-Oct-16.52432398) 9.9544e-05 TDB period 1944.398972277377 5.32 7.5784e-06 2.075e-08 d yr n .1851471869368199 7.2162e-10 deg/d Q 3.363326765910936 8.7392e-09 au   Orbit Determination Parameters    # obs. used (total)      2809      data-arc span      49542 days (135.64 yr)      first obs. used      1884-11-24      last obs. used      2020-07-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46441      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:31:50   Additional Information  Earth MOID = 1.73514 au   Jupiter MOID = 2.05228 au   T_jup = 3.222  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 7.8   n/a MPO502155 IRAS observations used: 17 diameter diameter 168.90 km 3.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17 rotation period rot_per 15.51 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Lagerkvist, C.-I.; Magnusson, P.; Debehogne, H.; Hoffmann, M.; et al. (1992) Astron. Astrophys. Suppl. Ser. 95, 461-470.] [Lopez-Gonzalez, M.J.; Rodriguez, E. (2000) Astron. Astrophys. Suppl. Ser. 145, 255-261.] [Riccioli, D.; Blanco, C.; Cigna, M. (2001) Planet. Space Sci. 49, 657-671.] geometric albedo albedo 0.0575   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17 B-V BV 0.689   0.015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=3.04, mean=10.45, max.=18.30) deg. U-B UB 0.289   0.034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=3.04, mean=10.45, max.=18.30) deg. Tholen spectral type spec_T CP   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo SMASSII spectral type spec_B B   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) 241 Germania (A884 RA)          Discovered 1884-Sep-12 by Luther, R. at Dusseldorf Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  A884 RA = 1953 US = 1953 VK1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-26 13:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin