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268 Adorea (A887 LA)
Classification: Main-belt Asteroid          SPK-ID: 2000268
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 65 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1367859733079485 1.9355e-08  
a 3.092664173527248 1.0741e-08 au
q 2.669631094436701 6.4499e-08 au
i 2.440461134894022 3.0304e-07 deg
node 120.8543851112923 1.0622e-05 deg
peri 68.5593609592956 1.3482e-05 deg
M 268.8741695341581 1.0683e-05 deg
tp 2459899.347818510891
(2022-Nov-15.84781851)
6.0303e-05 TDB
period 1986.541178703194
5.44
1.0349e-05
2.833e-08
d
yr
n .1812195004359318 9.441e-10 deg/d
Q 3.515697252617795 1.2211e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3765  
   data-arc span      45778 days (125.33 yr)  
   first obs. used      1895-12-11  
   last obs. used      2021-04-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44163  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 10:48:39  

Additional Information
 Earth MOID = 1.67227 au 
 Jupiter MOID = 1.43909 au 
 T_jup = 3.209 
[ 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 8.42   n/a E2021B10 IRAS observations used: 3
diameter diameter 144.585 km 0.892 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 7.80 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2006) Minor Planet Bull. 33, 100-101.]
geometric albedo albedo 0.041   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.663   0.039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=3.02, mean=8.19, max.=16.88) deg.
U-B UB 0.285   0.026 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=3.02, mean=8.19, max.=16.88) deg.
Tholen spectral type spec_T FC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

268 Adorea (A887 LA)          Discovered 1887-Jun-08 by Borrelly, A. at Marseille
June 9 is date of first measurement.
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
1917-Jan-17 05:39 00:02 Jupiter 1.58122541413397 1.58122458418676 1.58122624408 1.64331524467444 1.27637593021642 2421245.735446418 1.78382376731378 90.9980058949176 18.3542215532945 -29.1884317480965 3238383.27043051 T 65 CATAB v2.0g-lin.ifort 2021-Jul-08 10:50:24 2021-Jul-08 10:50
1926-Nov-09 18:26 00:02 Jupiter 1.62798892576042 1.62798804445106 1.62798980706987 1.79066894160879 1.47170648724025 2424829.268124444 1.57151265649411 95.1652466867557 14.661720692793 61.8320460330535 4569146.32195627 T 65 CATAB v2.0g-lin.ifort 2021-Jul-08 10:50:24 2021-Jul-08 10:50
1977-Sep-23 21:13 < 00:01 Jupiter 1.99450415255407 1.99450364562268 1.99450465948535 3.30266955038153 3.17147752334341 2443410.383903337 0.633122100745796 20.0761694207221 2.44054842273784 -13.46182406003 6392904.13023808 T 65 CATAB v2.0g-lin.ifort 2021-Jul-08 10:50:24 2021-Jul-08 10:50
1987-Jul-26 06:19 < 00:01 Jupiter 1.46485232623052 1.46485216150028 1.46485249096051 1.25275590581384 0.642601012887323 2447002.763030850 0.475669943050299 262.754896676294 43.3481291154714 4.84823316782034 4307875.63137964 T 65 CATAB v2.0g-lin.ifort 2021-Jul-08 10:50:24 2021-Jul-08 10:50
1997-May-23 00:14 < 00:01 Jupiter 1.84861564265685 1.84861540785767 1.84861587745603 2.61894718917454 2.43772406868364 2450591.509702716 0.278341588514514 8.65253097165184 3.58798110695618 -65.7723203342392 5338726.29817005 T 65 CATAB v2.0g-lin.ifort 2021-Jul-08 10:50:24 2021-Jul-08 10:50
2048-Apr-13 16:35 < 00:01 Jupiter 1.75776030782776 1.75775996646512 1.7577606491903 2.29847496550232 2.0782769693455 2469180.191294936 0.593718378222344 5.06482759179017 2.4093559488713 71.856090448618 3491263.0921622 T 65 CATAB v2.0g-lin.ifort 2021-Jul-08 10:50:24 2021-Jul-08 10:50
2058-Feb-05 16:37 < 00:01 Jupiter 1.49185068947996 1.49185046013794 1.49185091882214 1.3454857253145 0.82146167526633 2472765.192647158 0.810390970768086 138.58271616412 60.8797913203818 20.2735443119309 4503289.14505503 T 65 CATAB v2.0g-lin.ifort 2021-Jul-08 10:50:24 2021-Jul-08 10:50
2118-Oct-17 01:38 00:02 Jupiter 1.55458898608635 1.55458818117906 1.55458979099196 1.53088975542156 1.11978453016158 2494932.567864532 1.90497530600679 151.525503636201 19.9680770546525 -13.3016530644888 2319056.79792763 T 65 CATAB v2.0g-lin.ifort 2021-Jul-08 10:50:24 2021-Jul-08 10:50
2128-Aug-09 14:25 00:02 Jupiter 1.64791354982367 1.6479124499604 1.64791464968777 1.89152794957905 1.59683565755024 2498517.100997155 2.10177915173265 112.621167463321 10.5445398321192 76.4721148853591 4932303.12803467 T 65 CATAB v2.0g-lin.ifort 2021-Jul-08 10:50:24 2021-Jul-08 10:50
2179-Jun-22 03:07 00:03 Jupiter 1.95623595240985 1.95623421847461 1.95623768634432 3.08720001295713 2.94360870276262 2517095.629795630 2.71274266253747 66.2057855424008 2.768993601855 -22.104213046201 6787774.48699944 T 65 CATAB v2.0g-lin.ifort 2021-Jul-08 10:50:24 2021-Jul-08 10:50
2189-Apr-21 17:46 00:03 Jupiter 1.45487238397064 1.4548720765439 1.45487269139953 1.21411852835005 0.55649758486672 2520687.240086394 3.07709499000614 608.932253644096 168.706980776175 -14.8280712193633 3394271.94733951 T 65 CATAB v2.0g-lin.ifort 2021-Jul-08 10:50:24 2021-Jul-08 10:50
2199-Feb-17 13:08 00:03 Jupiter 1.87533416138468 1.87533209203538 1.87533623073386 2.78587856773482 2.61873818975958 2524276.047106216 3.18422423775267 106.114206335075 4.52387557200006 -53.1553890191749 5603079.40768128 T 65 CATAB v2.0g-lin.ifort 2021-Jul-08 10:50:24 2021-Jul-08 10:50
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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