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3271 Ul (1982 RB)
Classification: Amor [NEO]          SPK-ID: 2003271
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 66 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3959257109344975 1.14e-07  
a 2.101645379864325 3.1957e-08 au
q 1.26954993870934 2.3038e-07 au
i 25.07347522911926 1.2991e-05 deg
node 158.8131076903992 1.2436e-05 deg
peri 159.0937426729713 7.8774e-05 deg
M 211.5742063791426 0.00013207 deg
tp 2459659.322241177185
(2022-Mar-20.82224118)
0.00041843 TDB
period 1112.85244157573
3.05
2.5382e-05
6.949e-08
d
yr
n .3234930225702361 7.3783e-09 deg/d
Q 2.933740821019311 4.4609e-08 au
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      14084 days (38.56 yr)  
   first obs. used      1982-09-14  
   last obs. used      2021-04-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58738  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:55:01  

Additional Information
 Earth MOID = .274532 au 
 Jupiter MOID = 2.49576 au 
 T_jup = 3.533 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457427.5 (2016-Feb-09.0) TDB
Reference: JPL 66 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3959789980785574 1.1439e-07  
q 1.269252490386432 2.3134e-07 au
tp 2457434.050560625659
(2016-Feb-15.55056063)
0.00036971 TDB
node 158.8439278828186 1.2434e-05 deg
peri 159.1093885891681 7.8814e-05 deg
i 25.07494797939558 1.2993e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      14084 days (38.56 yr)  
   first obs. used      1982-09-14  
   last obs. used      2021-04-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58738  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:55:01  

Additional Information
 Jupiter MOID = 2.49576 au 
 T_jup = 3.533 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.308467478718426E-14 -2.639768138019114E-14 2.195185270203854E-11 -2.139991975870121E-13 5.128648807948482E-12 1.337747511290473E-13
q -2.639768138019114E-14 5.35159760238111E-14 -3.944387497985204E-11 3.855926541025932E-13 -9.371564948619361E-12 -2.61079167635027E-13
tp 2.195185270203854E-11 -3.944387497985204E-11 1.366821296187337E-7 -1.310756149041114E-9 2.875993972252723E-8 4.377989689928464E-10
node -2.139991975870121E-13 3.855926541025932E-13 -1.310756149041114E-9 1.545955710591142E-10 -4.041736749507254E-10 7.013587632550558E-11
peri 5.128648807948482E-12 -9.371564948619361E-12 2.875993972252723E-8 -4.041736749507254E-10 6.211702868384939E-9 2.796582491022661E-11
i 1.337747511290473E-13 -2.61079167635027E-13 4.377989689928464E-10 7.013587632550558E-11 2.796582491022661E-11 1.688260281562813E-10

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 16.4   n/a MPO435729  

3271 Ul (1982 RB)          Discovered 1982-Sep-14 by Schuster, H.-E. at La Silla
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
1915-Aug-28 21:13 < 00:01 Earth 0.436445850974223 0.436423953706908 0.436467748323135 13.16489000342 13.1644262657219 2420738.384120869 0.758225061802329 1131.80253826498 41.0064457614175 -15.2651621790307 401176.660191876 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
1918-Aug-25 23:45 < 00:01 Earth 0.283629157108548 0.283622682653273 0.28363563223837 13.1158031142504 13.1150868414616 2421831.489589795 0.237622622497856 765.643836296314 36.613089467668 -65.1990192557116 1074667.665858 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
1921-Aug-25 16:26 < 00:01 Earth 0.353988292762897 0.353971134284273 0.354005451246531 14.6724445728939 14.6719315596551 2422927.184406719 0.11445301376763 858.205516342997 50.6599662642684 -4.4683240140171 92263.4042774027 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
1949-Feb-26 04:06 00:02 Mars 0.0747615651418131 0.074760812388381 0.0747623178952578 13.670274631053 13.669994504022 2432973.671122916 1.59914466395741 782.475667393133 37.5366298306233 -89.9947468147515 296156.518954655 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
1979-Aug-29 01:42 < 00:01 Earth 0.430375199855194 0.430372296414352 0.430378103296818 13.1721860967381 13.1717160781754 2444114.571060739 0.110509037871029 147.872631552881 41.9383461083244 -12.244882544794 505114.530313722 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
1982-Aug-26 01:07 < 00:01 Earth 0.283521554308105 0.283520506884312 0.283522601732961 13.17265775055 13.1719442987653 2445207.546471230 0.100100704284043 123.186648650628 50.6455815701519 83.4677336068933 901590.775344034 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
1985-Aug-25 11:19 < 00:01 Earth 0.372594609089458 0.372592162913165 0.372597055266513 14.7546053693973 14.7541206891455 2446302.971741342 0.163187882364979 128.301034796898 90.5334180913242 -25.948041033448 433121.167039891 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
2037-Jul-16 02:22 00:02 Mars 0.0917016302111224 0.0916915403755784 0.0917117250327231 13.4892406045936 13.4890091608949 2465255.598784863 2.48672411575676 1181.19995172685 33.2571419761283 -64.8303911036644 371167.887367369 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
2043-Aug-29 08:56 < 00:01 Earth 0.440130986022477 0.440112110417131 0.440149861664525 13.301948109901 13.301492993389 2467490.872382179 0.60586261830803 962.403627464011 44.260212286132 -12.0486830163957 307359.633958561 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
2046-Aug-26 09:54 < 00:01 Earth 0.283427230382732 0.283420624333762 0.283433836767568 13.2134605125814 13.2127490273244 2468583.912200369 0.0858333272485692 589.080812565304 28.4006420343358 -56.0964619752926 1214485.21298332 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
2049-Aug-25 19:20 < 00:01 Earth 0.342717370842625 0.342701623611314 0.342733118095717 14.461611571484 14.4610739611361 2469679.305393473 0.173173490602923 797.021769686335 45.1855540119453 -9.88249558169125 185703.182752106 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
2107-Aug-29 21:31 00:01 Earth 0.405268407440521 0.405231996010165 0.405304819001196 13.1982328575756 13.1977347054168 2490866.396199110 1.06093553747511 1851.52205974264 39.4313720156722 -11.2935671593911 294240.988928643 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
2110-Aug-27 06:54 < 00:01 Earth 0.278675617571222 0.278673885790556 0.278677350671323 13.3617709492791 13.3610553646698 2491959.787301416 0.139885008099487 1035.36872210382 32.4472857773541 -85.5617114704411 1313528.33731668 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
2113-Aug-26 17:07 < 00:01 Earth 0.391078846502281 0.391041433311522 0.391116259742502 14.9267033016568 14.9262468542216 2493055.213062388 0.168219771018503 1878.49881254502 49.2919460853858 -6.71781130175445 128965.233814221 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
2171-Aug-31 06:43 00:02 Earth 0.4566819120098 0.456623731569052 0.456740092559578 13.4225366266362 13.4221019453127 2514243.780047812 2.02962586923273 2922.49177308962 47.9917990995267 -6.91938021060468 166671.306556967 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
2174-Aug-27 21:28 < 00:01 Earth 0.292973960022459 0.292951191558983 0.292996731644949 13.2257589857847 13.2250713253748 2515336.394633935 0.516608270711026 1895.24486937786 25.9750679311227 -53.200957559931 1319640.86147034 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
2177-Aug-26 21:58 < 00:01 Earth 0.347449847641313 0.347404036820704 0.347495658467473 14.3897737684681 14.3892408333891 2516431.415558251 0.0921678268290099 2285.4479552495 44.2350776456378 1.77380380394144 38618.9256747892 T 66 CATAB v2.0f-lin.ifort 2021-Apr-12 14:55:05 2021-Apr-12 14:55
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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