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211 Isolda (A879 XA)
Classification: Main-belt Asteroid          SPK-ID: 2000211
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 108 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1583402107049366 1.7938e-08  
a 3.047066649681148 8.6746e-09 au
q 2.564593474338649 5.7033e-08 au
i 3.879328810422018 1.0977e-06 deg
node 263.6020271876366 1.0933e-05 deg
peri 173.187329555927 1.3333e-05 deg
M 234.1409472282913 9.8632e-06 deg
tp 2460075.708818156908
(2023-May-11.20881816)
5.4847e-05 TDB
period 1942.769861616585
5.32
8.2962e-06
2.271e-08
d
yr
n .1853024422050911 7.9129e-10 deg/d
Q 3.529539825023646 1.0048e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3078  
   data-arc span      51643 days (141.39 yr)  
   first obs. used      1880-02-01  
   last obs. used      2021-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44362  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 10:42:23  

Additional Information
 Earth MOID = 1.57986 au 
 Jupiter MOID = 1.73202 au 
 T_jup = 3.215 
[ show covariance matrix ]

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 8.04   n/a E2021B10 IRAS observations used: 58
magnitude slope G 0.12   n/a PDS3 (MPC 17258) Fit
diameter diameter 141.125 km 2.486 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 18.365 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.062   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.711   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=3.43, mean=6.84, max.=18.45) deg.
U-B UB 0.364   0.031 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=3.43, mean=6.84, max.=18.45) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Ch   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)

211 Isolda (A879 XA)          Discovered 1879-Dec-10 by Palisa, J. at Pola
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
1925-Oct-14 05:14 00:01 Jupiter 1.7735685622123 1.77356823583362 1.77356888859099 2.31140741678623 2.09462225715427 2424437.717849624 1.24105324251956 23.5235598683967 2.2185640422122 74.5922740592218 4193858.14305812 T 108 CATAB v2.0g-lin.ifort 2021-Jul-08 10:43:33 2021-Jul-08 10:43
1973-Dec-25 15:16 < 00:01 Jupiter 1.87213354652899 1.87213322634459 1.87213386671338 2.7222701893717 2.55066284648616 2442042.135919730 0.57630504274462 29.4024962018608 5.19475020385949 76.5611190173811 5267073.20892749 T 108 CATAB v2.0g-lin.ifort 2021-Jul-08 10:43:33 2021-Jul-08 10:43
1983-May-13 19:57 < 00:01 Jupiter 1.86661909386787 1.86661884991966 1.86661933781608 2.28776097335551 2.07997668806907 2445468.331278817 0.425645170590808 18.4367460863416 4.10023681380357 77.7815648460178 6570228.39075829 T 108 CATAB v2.0g-lin.ifort 2021-Jul-08 10:43:33 2021-Jul-08 10:43
2031-Jul-19 00:39 < 00:01 Jupiter 1.75634647812529 1.75634631603101 1.75634664021947 2.14671297791529 1.90888679588024 2463066.527102216 0.255242908110325 12.3679125147536 4.47496576243853 65.3474688421255 6371140.54819845 T 108 CATAB v2.0g-lin.ifort 2021-Jul-08 10:43:33 2021-Jul-08 10:43
2079-Sep-22 10:39 < 00:01 Jupiter 1.73266653822154 1.73266637071423 1.73266670572874 2.14710387539807 1.9058712628051 2480663.943512544 0.932907336029164 17.1971284396617 2.5239020698894 68.9830402819419 6794280.12347208 T 108 CATAB v2.0g-lin.ifort 2021-Jul-08 10:43:33 2021-Jul-08 10:43
2127-Dec-03 03:39 00:02 Jupiter 1.79739671083851 1.79739628745414 1.79739713422318 2.36891162264377 2.16084313229749 2498266.651987087 1.65097150134229 57.5314872047557 2.2840701682117 84.3903826937487 4628598.62221076 T 108 CATAB v2.0g-lin.ifort 2021-Jul-08 10:43:33 2021-Jul-08 10:43
2137-Apr-22 20:50 00:02 Jupiter 1.94400602516917 1.94400527149782 1.94400677884118 2.49019932734595 2.30860846706625 2501695.367918851 1.73964394397206 72.9170603027189 4.91771581976368 69.0252826710247 7314765.65424209 T 108 CATAB v2.0g-lin.ifort 2021-Jul-08 10:43:33 2021-Jul-08 10:43
2176-Feb-16 08:41 00:02 Jupiter 1.92877702757916 1.92877620915324 1.92877784600694 2.99539551189226 2.84501215994964 2515873.861831247 2.30599358486569 108.946640229055 6.23715201315716 78.2782559226489 6060109.89439148 T 108 CATAB v2.0g-lin.ifort 2021-Jul-08 10:43:33 2021-Jul-08 10:43
2185-Jun-27 16:53 00:02 Jupiter 1.80155642022612 1.80155568631833 1.80155715413524 2.22595261670469 2.00363220299973 2519293.203680709 2.41183023071911 92.6386993222618 4.49444670566799 75.1724668878024 6137506.96695397 T 108 CATAB v2.0g-lin.ifort 2021-Jul-08 10:43:33 2021-Jul-08 10:43

Alternate Designations
 A879 XA = 1950 FM = A912 AB = A912 BA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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