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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 58 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3958679990739004 1.1466e-07  
a 2.101721577663237 3.2563e-08 au
q 1.26971726210325 2.3141e-07 au
i 25.070501747565 1.2996e-05 deg
node 158.8162113753692 1.3204e-05 deg
peri 159.0775631895575 7.9532e-05 deg
M 146.9061760307891 0.00013259 deg
tp 2458546.350589485819
(2019-Mar-03.85058949)
0.00039966 TDB
period 1112.912963923582
3.05
2.5864e-05
7.081e-08
d
yr
n .3234754303973759 7.5177e-09 deg/d
Q 2.933725893223224 4.5454e-08 au
  Orbit Determination Parameters
   # obs. used (total)      199  
   data-arc span      14035 days (38.43 yr)  
   first obs. used      1982-09-14  
   last obs. used      2021-02-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59822  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-17 05:22:26  

Additional Information
 Earth MOID = .276557 au 
 Jupiter MOID = 2.49547 au 
 T_jup = 3.533 
[ 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 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 0.436445886196494 0.436423378901252 0.4364683935777 13.1648899655496 13.1644262278877 2420738.384120271 0.779840009740205 1163.21923442248 41.303105936501 -15.2441639132873 397807.989092568 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
1918-Aug-25 23:45 < 00:01 Earth 0.283629171508876 0.283622509002284 0.283635834724049 13.1158029168396 13.1150866440765 2421831.489588387 0.244098933387006 785.20146694027 37.3025463418197 -65.105549967758 1055218.20562858 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
1921-Aug-25 16:26 < 00:01 Earth 0.35398827591639 0.353970641750317 0.354005910087997 14.672444027937 14.6719310146548 2422927.184404085 0.116276594573211 882.115964653735 51.2305037279868 -4.56564926731958 91969.7812047095 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
1949-Feb-26 04:06 00:02 Mars 0.0747615651118061 0.0747608065178801 0.0747623237075553 13.6702747529599 13.6699946259352 2432973.671126571 1.6456776078873 805.693017042125 37.8180813212396 89.9384278092413 293970.269667674 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
1979-Aug-29 01:42 < 00:01 Earth 0.430375162376641 0.430372183342771 0.430378141411319 13.1721858086029 13.1717157899891 2444114.571060904 0.114833660140466 151.645714334221 42.3760630377013 -12.0823424204033 492541.151434676 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
1982-Aug-26 01:07 < 00:01 Earth 0.283521549758754 0.283520499169328 0.283522600349213 13.1726577296933 13.171944277896 2445207.546469888 0.103448280905784 126.230139686098 50.907680666374 83.8507683869604 897218.226739654 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
1985-Aug-25 11:19 < 00:01 Earth 0.372594631838734 0.372592156778126 0.37259710690004 14.7546055498531 14.7541208696369 2446302.971740472 0.166102497354724 129.188449924693 91.9780916086528 -24.8864286631256 426281.823789818 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
2037-Jul-16 02:22 00:03 Mars 0.0917016853867356 0.0916914120351727 0.0917119639067326 13.4892401613106 13.4890087177468 2465255.598773660 2.5336302198681 1202.54926274909 33.2732591818351 -64.8255870954194 370975.954701281 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
2043-Aug-29 08:56 < 00:01 Earth 0.440131076753951 0.440111851984132 0.440150301561999 13.3019481599295 13.3014930435132 2467490.872383828 0.616559324777409 980.292233681547 44.4773264585496 -12.0718826446388 306249.924338255 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
2046-Aug-26 09:54 < 00:01 Earth 0.283427259078208 0.283420532602644 0.283433985904492 13.2134601306583 13.212748645453 2468583.912198958 0.0882087668441375 601.33506972774 29.2593480739956 -56.1960019300269 1184820.76043418 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
2049-Aug-25 19:20 < 00:01 Earth 0.342717297614093 0.342701249587882 0.342733345662668 14.4616105216107 14.4610729111091 2469679.305392021 0.176530196913084 812.114192365033 45.5301316904211 -9.82842593403894 183137.856967069 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
2107-Aug-29 21:31 00:01 Earth 0.405268592255921 0.40523144629422 0.405305738353654 13.1982331320764 13.1977349801553 2490866.396200690 1.08204175393673 1888.98425213209 39.7885294575145 -11.3103948676998 292022.822418119 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
2110-Aug-27 06:54 < 00:01 Earth 0.278675621905576 0.278673863042373 0.278677382152655 13.3617700484303 13.3610544637839 2491959.787300144 0.143224885453434 1058.0445104244 32.5224382681934 -85.5795326138826 1311732.32245476 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
2113-Aug-26 17:07 < 00:01 Earth 0.391078667738627 0.391040496155033 0.391116839373351 14.9267010532817 14.9262446055692 2493055.213060031 0.171234408830388 1916.48750777889 49.5732902543487 -6.6948819089708 127704.465039366 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
2171-Aug-31 06:43 00:02 Earth 0.456681913305213 0.456622592124454 0.456741234599439 13.4225364297193 13.4221017483908 2514243.780046264 2.06885709187426 2979.81690253796 48.1519735878487 -6.92315167066356 166155.934094413 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
2174-Aug-27 21:28 < 00:01 Earth 0.292973951956677 0.292950741493087 0.292997165710577 13.2257588701791 13.2250712097444 2515336.394631391 0.526766318079994 1933.45907698875 27.1143571825285 -53.2327683333498 1269716.37713939 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
2177-Aug-26 21:58 < 00:01 Earth 0.347449877895367 0.347403168776764 0.347496587019886 14.3897739624771 14.3892410274519 2516431.415555445 0.0939594434935703 2330.29384634873 44.8286634919033 1.79813996630863 38421.4301057705 T 58 CATAB v2.0f-lin.ifort 2021-Feb-17 05:22:26 2021-Feb-17 05:22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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