+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   574 Reginhild (A905 SH) Classification: Main-belt Asteroid          SPK-ID: 2000574 [ 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 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2384252255437203 2.8225e-08   a 2.252695373159063 4.1373e-09 au q 1.715595970732319 6.3774e-08 au i 5.685068799941649 3.7172e-06 deg node 336.651919410026 3.1713e-05 deg peri 77.11490326742093 3.3007e-05 deg M 355.8486916833958 7.5269e-06 deg tp 2459214.740807509218 (2020-Dec-31.24080751) 2.5819e-05 TDB period 1234.957828309936 3.38 3.4022e-06 9.315e-09 d yr n .2915079298640238 8.0307e-10 deg/d Q 2.789794775585808 5.1237e-09 au   Orbit Determination Parameters    # obs. used (total)      2494      data-arc span      42132 days (115.35 yr)      first obs. used      1905-09-19      last obs. used      2021-01-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .36313      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:47:52   Additional Information  Earth MOID = .73671 au   Jupiter MOID = 2.61222 au   T_jup = 3.582  [ hide covariance matrix ] Orbital Elements at Epoch 2456870.5 (2014-Aug-01.0) TDB Reference: JPL 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2395112178810764 2.8383e-08   q 1.71332108724588 6.4224e-08 au tp 2456744.199033400930 (2014-Mar-27.69903340) 2.6295e-05 TDB node 336.8148310877987 3.1743e-05 deg peri 76.85220753998672 3.3e-05 deg i 5.683184811361391 3.7166e-06 deg   Orbit Determination Parameters    # obs. used (total)      2494      data-arc span      42132 days (115.35 yr)      first obs. used      1905-09-19      last obs. used      2021-01-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .36313      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:47:52   Additional Information  Jupiter MOID = 2.61222 au   T_jup = 3.582  Orbit Covariance (6×6)   e q tp node peri i e 8.056162433511361E-16 -1.820696466701499E-15 -2.490403188519965E-13 7.894241453497085E-15 -9.133280800532917E-14 -1.221689496390855E-15 q -1.820696466701499E-15 4.124696961064922E-15 5.384680190656807E-13 -1.761661660746985E-14 1.987736350448915E-13 2.914076585657823E-15 tp -2.490403188519965E-13 5.384680190656807E-13 6.9142648269709E-10 -1.179451916301331E-11 2.444864112128357E-10 5.733888485709902E-13 node 7.894241453497085E-15 -1.761661660746985E-14 -1.179451916301331E-11 1.007592170621107E-9 -1.006019401012994E-9 2.777246661547822E-11 peri -9.133280800532917E-14 1.987736350448915E-13 2.444864112128357E-10 -1.006019401012994E-9 1.088985798620746E-9 -2.747869541342712E-11 i -1.221689496390855E-15 2.914076585657823E-15 5.733888485709902E-13 2.777246661547822E-11 -2.747869541342712E-11 1.381317132720001E-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 12.40   n/a E2021B10 IRAS observations used: 4 diameter diameter 8.456 km 0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 14.339 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pilcher, F. (2011) Minor Planet Bull. 38, 76-78.] geometric albedo albedo 0.298   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a medium resolution spectrum published by Chapman and Gaffey (1979) 574 Reginhild (A905 SH)          Discovered 1905-Sep-19 by Wolf, M. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2006-Jan-04 12:48 00:01 Amphi 0.0284821349423987 0.0284815117316476 0.0284827581532522 1.99751160321154 1.99751150216739 2453740.033649073 1.31462477049371 51.5490613189188 30.9461880861095 -87.2232715940142 137300.879620481 T 39 CATAB v2.0f-lin.ifort 2021-Feb-24 00:47:58 2021-Feb-24 00:47 Alternate Designations  A905 SH = 1947 BB = A912 YB = A922 TB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-05 01:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin