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JPL Small-Body Database Browser
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214 Aschera
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03109384853101772 3.8717e-08  
a 2.610787657924717 8.6028e-09 au
q 2.529608221942556 1.0268e-07 au
i 3.435962119385689 4.7997e-06 deg
node 341.9802282975725 6.9079e-05 deg
peri 131.2326339603559 0.00010941 deg
M 40.97607424844092 8.2746e-05 deg
tp 2458425.118572511226
(2018-Nov-02.61857251)
0.00035429 TDB
period 1540.833646316442
4.22
7.6158e-06
2.085e-08
d
yr
n .2336397578418835 1.1548e-09 deg/d
Q 2.691967093906879 8.8703e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2617  
   data-arc span      50835 days (139.18 yr)  
   first obs. used      1880-03-04  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45229  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:04:35  

Additional Information
 Earth MOID = 1.54778 au 
 Jupiter MOID = 2.32265 au 
 T_jup = 3.406 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455565.5 (2011-Jan-04.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03074705440751835 3.9372e-08  
q 2.53148221963411 1.0447e-07 au
tp 2455356.070595145677
(2010-Jun-08.57059515)
0.00035642 TDB
node 342.0626946674856 6.9124e-05 deg
peri 134.4205647838174 0.00010926 deg
i 3.435203041493498 4.7966e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2617  
   data-arc span      50835 days (139.18 yr)  
   first obs. used      1880-03-04  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45229  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:04:35  

Additional Information
 Jupiter MOID = 2.32265 au 
 T_jup = 3.406 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.550185454460428E-15 -4.10039335569591E-15 3.225115017252127E-12 -5.009070692378748E-15 7.79312264080851E-13 -2.307180659954822E-16
q -4.10039335569591E-15 1.091393655664317E-14 -9.064923639753644E-12 1.464916704420138E-14 -2.188772205248557E-12 6.982816066319687E-16
tp 3.225115017252127E-12 -9.064923639753644E-12 1.270379344511911E-7 -6.844498384727535E-11 3.017442449840378E-8 1.556440581518071E-12
node -5.009070692378748E-15 1.464916704420138E-14 -6.844498384727535E-11 4.77808507092967E-9 -4.784949650738776E-9 2.839046411241717E-11
peri 7.79312264080851E-13 -2.188772205248557E-12 3.017442449840378E-8 -4.784949650738776E-9 1.193688675288797E-8 -2.796924119092168E-11
i -2.307180659954822E-16 6.982816066319687E-16 1.556440581518071E-12 2.839046411241717E-11 -2.796924119092168E-11 2.300722246386713E-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 9.2   n/a MPO337241  
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. 2019-January); 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          Discovered 1880-Feb-29 by Palisa, J. at Pola
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 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 ]
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