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JPL Small-Body Database Browser
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217 Eudora (A880 QA)
Classification: Main-belt Asteroid          SPK-ID: 2000217
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 .3104545260597036 1.9324e-08  
a 2.866251702698703 8.7628e-09 au
q 1.976410888769559 5.7715e-08 au
i 10.52154767873448 3.8341e-07 deg
node 162.5735082550134 9.8483e-07 deg
peri 155.3123560732061 2.3915e-06 deg
M 273.4475775533566 5.3522e-06 deg
tp 2459426.634446958924
(2021-Jul-31.13444696)
2.7501e-05 TDB
period 1772.433359676139
4.85
8.1282e-06
2.225e-08
d
yr
n .2031105982262597 9.3144e-10 deg/d
Q 3.756092516627847 1.1483e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3189  
   data-arc span      49144 days (134.55 yr)  
   first obs. used      1885-10-09  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43555  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 11:04:04  

Additional Information
 Earth MOID = .969121 au 
 Jupiter MOID = 1.63929 au 
 T_jup = 3.203 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456587.5 (2013-Oct-22.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3059992036117561 1.9406e-08  
q 1.995864574986804 5.8229e-08 au
tp 2455874.056082422168
(2011-Nov-08.55608242)
2.204e-05 TDB
node 162.6870767821537 9.8211e-07 deg
peri 155.0244265091093 2.4258e-06 deg
i 10.47787541783188 3.8284e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3189  
   data-arc span      49144 days (134.55 yr)  
   first obs. used      1885-10-09  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43555  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 11:04:04  

Additional Information
 Jupiter MOID = 1.63929 au 
 T_jup = 3.203 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.765735088367551E-16 -1.124443229217193E-15 -2.111181684436971E-13 6.177595886962133E-15 -1.271400902310489E-14 2.469455992922736E-15
q -1.124443229217193E-15 3.39066590951127E-15 6.088630212775569E-13 -1.797570772225004E-14 3.873849919441846E-14 -7.022240049517967E-15
tp -2.111181684436971E-13 6.088630212775569E-13 4.857454159869737E-10 4.165865707940007E-12 4.824429852870303E-11 3.322536263573922E-12
node 6.177595886962133E-15 -1.797570772225004E-14 4.165865707940007E-12 9.645439030305752E-13 1.571600220832573E-13 3.088147914537213E-13
peri -1.271400902310489E-14 3.873849919441846E-14 4.824429852870303E-11 1.571600220832573E-13 5.884375721293017E-12 3.616355222386431E-13
i 2.469455992922736E-15 -7.022240049517967E-15 3.322536263573922E-12 3.088147914537213E-13 3.616355222386431E-13 1.465691555358838E-13

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 9.9   n/a MPO439062  
diameter diameter 65.392 km 0.293 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 25.272 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Buchheim, R.K.; Roy, R.; Behrend, R. (2007) Minor Planet Bull. 34, 13-14.]
[Pilcher, F. (2010) Minor Planet Bull. 37, 148-149.]
[Pilcher, F. (2011) Minor Planet Bull. 38, 183-185.]
[Pilcher, F. (2013) Minor Planet Bull. 40, 85-87.]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.049   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
Tholen spectral type spec_T X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a medium resolution spectrum published by Chapman and Gaffey (1979)

217 Eudora (A880 QA)          Discovered 1880-Aug-30 by Coggia, J. at Marseille
Reference: DISCOVERY.DBLast 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
1931-Feb-05 03:03 00:01 Jupiter 1.75444186393437 1.75444114509458 1.75444258278634 1.05248581751869 0.377029831220952 2426377.626816795 1.32026520839702 3878.62701037721 188.443049009331 -5.10444294707311 2802168.75179354 T 39 CATAB v2.0f-lin.ifort 2020-May-20 11:06:01 2020-May-20 11:06
1955-Dec-15 10:42 < 00:01 Jupiter 1.63898193622767 1.63898170524868 1.63898216720974 1.97366726909107 1.69167567091369 2435456.946169731 0.734727227129188 127.503097694869 8.4981859266122 89.8431663695581 19019802.5882778 T 39 CATAB v2.0f-lin.ifort 2020-May-20 11:06:01 2020-May-20 11:06
1980-Oct-21 11:28 < 00:01 Jupiter 1.99565273088277 1.99565231215741 1.99565314960859 2.55441624587475 2.38247239508318 2444533.978035862 0.453490399119077 55.7078809810795 3.83400253122532 -72.4976365551346 20438266.9575651 T 39 CATAB v2.0f-lin.ifort 2020-May-20 11:06:01 2020-May-20 11:06
2038-May-10 20:58 < 00:01 Jupiter 1.6560240239963 1.65602386828015 1.65602417971254 1.64261503728208 1.29430481267539 2465554.373569151 0.378123326724776 79.4424292814204 24.5097428141285 80.4882816396518 11772173.1425319 T 39 CATAB v2.0f-lin.ifort 2020-May-20 11:06:01 2020-May-20 11:06
2063-Feb-26 07:36 < 00:01 Jupiter 1.71482774856729 1.71482728569362 1.71482821144663 2.22284464465396 1.98825494688724 2474611.816911591 0.743552065214374 167.090828715867 4.132087030424 -84.501870845716 29811176.4428521 T 39 CATAB v2.0f-lin.ifort 2020-May-20 11:06:01 2020-May-20 11:06
2120-Aug-29 02:26 00:02 Jupiter 1.87280579579161 1.87280463393598 1.87280695769335 1.10680826307449 0.566105384150925 2495614.601644003 1.85443499850718 892.150546685221 229.899280459327 -50.5710621106577 5623154.18418736 T 39 CATAB v2.0f-lin.ifort 2020-May-20 11:06:01 2020-May-20 11:06
2145-Jul-27 04:14 00:02 Jupiter 1.61588772744627 1.61588757752518 1.61588787736746 2.01021549360674 1.72991280182442 2504712.676188064 1.77587233960002 256.846706376439 13.694385879489 84.112648755166 17511644.7382235 T 39 CATAB v2.0f-lin.ifort 2020-May-20 11:06:01 2020-May-20 11:06
2170-May-16 20:22 00:02 Jupiter 1.8506377287229 1.85063592457212 1.85063953290197 2.40520918940691 2.20672761740741 2513772.348540518 2.33103812998489 388.80896398134 3.97007440040517 -78.7276575054276 28728615.8958535 T 39 CATAB v2.0f-lin.ifort 2020-May-20 11:06:01 2020-May-20 11:06

Alternate Designations
 A880 QA = A914 RA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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