+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   524 Fidelio (A904 ED) Classification: Main-belt Asteroid          SPK-ID: 2000524 [ 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 82 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1285631671882805 3.3527e-08   a 2.634173284480616 8.0846e-09 au q 2.295515624105033 8.7749e-08 au i 8.228992727099333 3.7474e-06 deg node 326.6839866643889 2.4803e-05 deg peri 79.75734993689754 2.9118e-05 deg M 158.456245342911 1.6752e-05 deg tp 2458313.159715373190 (2018-Jul-13.65971537) 7.1485e-05 TDB period 1561.582517181117 4.28 7.189e-06 1.968e-08 d yr n .2305353678330443 1.0613e-09 deg/d Q 2.9728309448562 9.124e-09 au   Orbit Determination Parameters    # obs. used (total)      3254      data-arc span      42545 days (116.48 yr)      first obs. used      1904-03-15      last obs. used      2020-09-07      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41139      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:28:41   Additional Information  Earth MOID = 1.32178 au   Jupiter MOID = 2.4287 au   T_jup = 3.372  [ hide covariance matrix ] Orbital Elements at Epoch 2456418.5 (2013-May-06.0) TDB Reference: JPL 82 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1265951392848524 3.3532e-08   q 2.301877257160494 8.7547e-08 au tp 2456751.852574210439 (2014-Apr-04.35257421) 7.0503e-05 TDB node 326.7199664852354 2.4795e-05 deg peri 80.11019924534031 2.9233e-05 deg i 8.229162441395223 3.7461e-06 deg   Orbit Determination Parameters    # obs. used (total)      3254      data-arc span      42545 days (116.48 yr)      first obs. used      1904-03-15      last obs. used      2020-09-07      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41139      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:28:41   Additional Information  Jupiter MOID = 2.4287 au   T_jup = 3.372  Orbit Covariance (6×6)   e q tp node peri i e 1.1243941437799E-15 -2.926175126499746E-15 2.011568285598828E-13 -4.692892751494548E-15 1.699610076753474E-14 8.16802694416245E-16 q -2.926175126499746E-15 7.664411630726533E-15 -4.058271864923414E-13 1.170579946197813E-14 -2.267625857356967E-14 -2.165838845367179E-15 tp 2.011568285598828E-13 -4.058271864923414E-13 4.970643248214662E-9 -1.356188534979132E-11 1.103554673215841E-9 -2.387056183101364E-12 node -4.692892751494548E-15 1.170579946197813E-14 -1.356188534979132E-11 6.148155843271095E-10 -6.109718381268983E-10 7.894247753410841E-12 peri 1.699610076753474E-14 -2.267625857356967E-14 1.103554673215841E-9 -6.109718381268983E-10 8.545944636457011E-10 -8.376559638446598E-12 i 8.16802694416245E-16 -2.165838845367179E-15 -2.387056183101364E-12 7.894247753410841E-12 -8.376559638446598E-12 1.403312868044421E-11 [ 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 9.9   n/a MPO502158 IRAS observations used: 3 diameter diameter 65.527 km 0.957 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 14.198 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Koff, R.A. (2006) Minor Planet Bull. 33, 31-33.] [Wang, X.-b.; Gu, S.-h.; Li, X.-j. (2010) Earth, Moon, and Planets 106, 97-104.] [Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.] geometric albedo albedo 0.048   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.722   0.032 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=7.92, mean=11.38, max.=13.29) deg. U-B UB 0.316   0.051 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=7.92, mean=11.38, max.=13.29) deg. Tholen spectral type spec_T XC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices 524 Fidelio (A904 ED)          Discovered 1904-Mar-14 by Wolf, M. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A904 ED = 1953 UT  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-25 15:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin