+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0307496457682606 3.5657e-08   a 2.611486544344594 7.2344e-09 au q 2.53118425817742 9.3184e-08 au i 3.435856999123073 4.2753e-06 deg node 341.9708161615698 6.755e-05 deg peri 131.6899539754641 9.9907e-05 deg M 134.0017408396152 7.2906e-05 deg tp 2458426.729711812301 (2018-Nov-04.22971181) 0.00031199 TDB period 1541.45239049392 4.22 6.4053e-06 1.754e-08 d yr n .2335459740567447 9.7046e-10 deg/d Q 2.691788830511769 7.4569e-09 au   Orbit Determination Parameters    # obs. used (total)      3050      data-arc span      51361 days (140.62 yr)      first obs. used      1880-03-04      last obs. used      2020-10-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42959      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:32:07   Additional Information  Earth MOID = 1.54898 au   Jupiter MOID = 2.32032 au   T_jup = 3.406  [ hide covariance matrix ] Orbital Elements at Epoch 2455979.5 (2012-Feb-22.0) TDB Reference: JPL 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .03106306954154927 3.5846e-08   q 2.53031102503548 9.3853e-08 au tp 2455355.646161203090 (2010-Jun-08.14616120) 0.00030689 TDB node 342.0455467752168 6.7624e-05 deg peri 134.2835711097306 9.9117e-05 deg i 3.434585888004379 4.2722e-06 deg   Orbit Determination Parameters    # obs. used (total)      3050      data-arc span      51361 days (140.62 yr)      first obs. used      1880-03-04      last obs. used      2020-10-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42959      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:32:07   Additional Information  Jupiter MOID = 2.32032 au   T_jup = 3.406  Orbit Covariance (6×6)   e q tp node peri i e 1.28494327475559E-15 -3.35444745627209E-15 6.641340604769113E-13 -2.883464295044829E-15 1.561638621548164E-13 2.389881993351707E-17 q -3.35444745627209E-15 8.808323777231497E-15 -1.787436421019181E-12 8.456750543957102E-15 -4.186475715357957E-13 1.544142245870736E-18 tp 6.641340604769113E-13 -1.787436421019181E-12 9.41829774765601E-8 -5.688538671332527E-11 2.225703968468038E-8 -8.973542263086671E-13 node -2.883464295044829E-15 8.456750543957102E-15 -5.688538671332527E-11 4.573064970754815E-9 -4.577559403856105E-9 2.20194277082321E-11 peri 1.561638621548164E-13 -4.186475715357957E-13 2.225703968468038E-8 -4.577559403856105E-9 9.82421270209093E-9 -2.218867163108505E-11 i 2.389881993351707E-17 1.544142245870736E-18 -8.973542263086671E-13 2.20194277082321E-11 -2.218867163108505E-11 1.82518261406286E-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 9.3   n/a MPO473763   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 39 CATAB v2.0f-lin.ifort 2020-Nov-13 04:32:16 2020-Nov-13 04:32 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-Jan-22 07:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin