+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   571 Dulcinea (A905 RA) Classification: Main-belt Asteroid          SPK-ID: 2000571 [ 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 42 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2438464242164142 2.9739e-08   a 2.409023079864764 5.7932e-09 au q 1.821591415984928 7.1476e-08 au i 5.227866660491036 3.6502e-06 deg node 3.176685138245823 3.4729e-05 deg peri 27.51955307006621 3.5501e-05 deg M 214.2971372128949 9.4812e-06 deg tp 2459553.245801199781 (2021-Dec-04.74580120) 3.7215e-05 TDB period 1365.714335501251 3.74 4.9264e-06 1.349e-08 d yr n .2635983167503848 9.5085e-10 deg/d Q 2.996454743744601 7.2059e-09 au   Orbit Determination Parameters    # obs. used (total)      3119      data-arc span      42015 days (115.03 yr)      first obs. used      1905-09-06      last obs. used      2020-09-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41682      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:28:10   Additional Information  Earth MOID = .828676 au   Jupiter MOID = 2.46355 au   T_jup = 3.474  [ hide covariance matrix ] Orbital Elements at Epoch 2456265.5 (2012-Dec-04.0) TDB Reference: JPL 42 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2423371665345064 2.9635e-08   q 1.826368230176625 7.1116e-08 au tp 2456821.081751114357 (2014-Jun-12.58175111) 3.224e-05 TDB node 3.235232051444626 3.4751e-05 deg peri 27.50013356099897 3.5538e-05 deg i 5.225573883126941 3.6469e-06 deg   Orbit Determination Parameters    # obs. used (total)      3119      data-arc span      42015 days (115.03 yr)      first obs. used      1905-09-06      last obs. used      2020-09-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41682      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:28:10   Additional Information  Jupiter MOID = 2.46355 au   T_jup = 3.474  Orbit Covariance (6×6)   e q tp node peri i e 8.782312999983923E-16 -2.103454494870377E-15 -5.380680706453269E-14 -8.282603261886802E-16 -2.208081865956369E-14 1.198031668557225E-16 q -2.103454494870377E-15 5.057528129421995E-15 1.894625170561574E-13 1.424378868065367E-15 6.392607351187281E-14 -2.381844871829842E-16 tp -5.380680706453269E-14 1.894625170561574E-13 1.039395875990397E-9 -4.644566793609216E-12 2.475239165066288E-10 2.796990031218399E-15 node -8.282603261886802E-16 1.424378868065367E-15 -4.644566793609216E-12 1.207664796958354E-9 -1.203399682421614E-9 -3.998835317041719E-12 peri -2.208081865956369E-14 6.392607351187281E-14 2.475239165066288E-10 -1.203399682421614E-9 1.262928549279865E-9 3.969545930997889E-12 i 1.198031668557225E-16 -2.381844871829842E-16 2.796990031218399E-15 -3.998835317041719E-12 3.969545930997889E-12 1.329997605114706E-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 11.7   n/a MPO473769   diameter diameter 11.696 km 0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 126.3 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Stephens, R.D. (2011) Minor Planet Bull. 38, 115.] geometric albedo albedo 0.298   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.867   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=6.77 deg. U-B UB 0.437   0.034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=6.77 deg. Tholen spectral type spec_T S   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) 571 Dulcinea (A905 RA)          Discovered 1905-Sep-04 by Gotz, P. 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-Jan-16 07:56 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin