+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   214 Aschera (A880 DB) Classification: Main-belt Asteroid          SPK-ID: 2000214 [ 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 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .03020044884999584 2.1439e-08   a 2.613188429082274 6.8309e-09 au q 2.534268965594374 5.4732e-08 au i 3.436581942397316 2.6883e-07 deg node 341.9417966923492 5.5872e-06 deg peri 132.6449351199284 1.8137e-05 deg M 179.7320495314718 1.9506e-05 deg tp 2458430.168703250714 (2018-Nov-07.66870325) 8.2312e-05 TDB period 1542.959464117073 4.22 6.05e-06 1.656e-08 d yr n .2333178598479919 9.1485e-10 deg/d Q 2.692107892570174 7.0372e-09 au   Orbit Determination Parameters    # obs. used (total)      3106      data-arc span      51508 days (141.02 yr)      first obs. used      1880-03-04      last obs. used      2021-03-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .43574      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 10:29:49   Additional Information  Earth MOID = 1.55183 au   Jupiter MOID = 2.31728 au   T_jup = 3.405  [ hide covariance matrix ] Orbital Elements at Epoch 2456303.5 (2013-Jan-11.0) TDB Reference: JPL 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .03137588695467903 2.1562e-08   q 2.528721063643217 5.5044e-08 au tp 2456897.008575464745 (2014-Aug-27.50857546) 7.4355e-05 TDB node 342.036560570087 5.5971e-06 deg peri 134.3619706478859 1.7024e-05 deg i 3.435114167144764 2.6859e-07 deg   Orbit Determination Parameters    # obs. used (total)      3106      data-arc span      51508 days (141.02 yr)      first obs. used      1880-03-04      last obs. used      2021-03-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .43574      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 10:29:49   Additional Information  Jupiter MOID = 2.31728 au   T_jup = 3.405  Orbit Covariance (6×6)   e q tp node peri i e 4.649108469453552E-16 -1.178779230314539E-15 6.106180246592443E-13 8.817441331591007E-15 9.743248797684128E-14 -3.036742184195725E-16 q -1.178779230314539E-15 3.029850224580685E-15 -1.429613331193753E-12 -2.197433344329449E-14 -2.179420170741242E-13 7.998866240412337E-16 tp 6.106180246592443E-13 -1.429613331193753E-12 5.528703751960911E-9 5.101765635127579E-11 1.18753501144208E-9 1.121915857652044E-12 node 8.817441331591007E-15 -2.197433344329449E-14 5.101765635127579E-11 3.132799676874086E-11 -2.040979956381197E-11 1.142595195110387E-12 peri 9.743248797684128E-14 -2.179420170741242E-13 1.18753501144208E-9 -2.040979956381197E-11 2.898309268953837E-10 -8.896257974792566E-13 i -3.036742184195725E-16 7.998866240412337E-16 1.121915857652044E-12 1.142595195110387E-12 -8.896257974792566E-13 7.21385972236544E-14 [ 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 9.28   n/a E2021B10   magnitude slope G 0.51   n/a PDS3 (MPC 17258) Fit diameter diameter 24.957 km 0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 6.835 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.] [Bel'skaya, I.N.; Shevchenko, V.G.; Kiselev, N.; Krugly, Yu.N.; et al. (2003) Icarus 166, 276-284.] [Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.] [Shevchenko, V.G.; Belksaya, I.N.; Muinon, K.; Penttila, A.; et al. (2016) Plan. Space Sci. 123, 101-116.] geometric albedo albedo 1.000   0.000 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.700   0.041 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=1.66, mean=2.20, max.=2.97) deg. U-B UB 0.217   0.050 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=1.66, mean=3.73, max.=9.08) deg. Tholen spectral type spec_T E   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo SMASSII spectral type spec_B Xc   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) 214 Aschera (A880 DB)          Discovered 1880-Feb-29 by Palisa, J. at Pola 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 2045-Jul-14 04:33 < 00:01 Thisb 0.0495943348663997 0.0495919685792126 0.0495967011727068 3.51860249809836 3.51860245902574 2468175.689752250 0.419828664387791 128.510308611111 37.469255297369 24.5802627794938 97602.4322066978 T 41 CATAB v2.0f-lin.ifort 2021-Apr-12 10:31:59 2021-Apr-12 10:32 Alternate Designations  A880 DB = 1947 BP = 1948 JE = 1949 QG2 = 1949 SX1 = 1950 XH = 1953 OO = A903 SE  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-17 21:56 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin