+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   514 Armida (A903 QC) Classification: Main-belt Asteroid          SPK-ID: 2000514 [ 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 96 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .03735929678792491 1.4809e-08   a 3.045381809740494 7.9729e-09 au q 2.931608486877851 4.599e-08 au i 3.881668947492066 3.2497e-07 deg node 268.53713768334 5.4059e-06 deg peri 110.2396737784597 2.8025e-05 deg M 345.8986574604785 2.4925e-05 deg tp 2459276.535956297169 (2021-Mar-03.03595630) 0.00013433 TDB period 1941.158736500676 5.31 7.623e-06 2.087e-08 d yr n .185456239734918 7.2829e-10 deg/d Q 3.159155132603137 8.2707e-09 au   Orbit Determination Parameters    # obs. used (total)      3702      data-arc span      42907 days (117.47 yr)      first obs. used      1903-08-24      last obs. used      2021-02-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .4426      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 11:00:08   Additional Information  Earth MOID = 1.93472 au   Jupiter MOID = 2.04931 au   T_jup = 3.234  [ 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 9.17   n/a E2021B10 IRAS observations used: 15 diameter diameter 120.093 km 0.790 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 21.851 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Koff, R.A. (2006) Minor Planet Bull. 33, 31-33.] [Stephens, R.D. (2010) Minor Planet Bull. 37, 28-29.] geometric albedo albedo 0.030   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.675   0.062 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=2.31, mean=5.06, max.=7.81) deg. U-B UB 0.255   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=2.31, mean=5.06, max.=7.81) deg. Tholen spectral type spec_T XC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices 514 Armida (A903 QC)          Discovered 1903-Aug-24 by Wolf, M. at Heidelberg 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 ] 2021-Apr-17 22:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin