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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 55 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .395867985128419 1.1615e-07  
a 2.101721575511026 3.3879e-08 au
q 1.26971729011255 2.3383e-07 au
i 25.07050400019739 1.3103e-05 deg
node 158.8162187568392 1.447e-05 deg
peri 159.0775409258467 8.3268e-05 deg
M 146.9061969974157 0.00013731 deg
tp 2458546.350525366657
(2019-Mar-03.85052537)
0.00041381 TDB
period 1112.91296221411
3.05
2.6909e-05
7.367e-08
d
yr
n .3234754308942451 7.8214e-09 deg/d
Q 2.933725860909503 4.729e-08 au
  Orbit Determination Parameters
   # obs. used (total)      188  
   data-arc span      13651 days (37.37 yr)  
   first obs. used      1982-09-14  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58391  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 14:27:45  

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 0.436445797500045 0.436422321210171 0.436469273883747 13.164889753383 13.1644260156194 2420738.384121233 0.809487023862301 1213.43319628107 41.3581157973788 -15.2666759267714 397561.170667614 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
1918-Aug-25 23:45 < 00:01 Earth 0.283629200440806 0.283622254377193 0.283636147279071 13.1158040385973 13.1150877659685 2421831.489589860 0.249981159974221 820.496163936271 38.5424939611195 -65.1639241090407 1018258.47794619 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
1921-Aug-25 16:26 < 00:01 Earth 0.353988381738438 0.353969983721808 0.354006779760983 14.6724461455057 14.6719331324509 2422927.184404621 0.116627460998546 920.27323665357 52.4644428360547 -4.52382880278803 88631.1626452216 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
1949-Feb-26 04:06 00:02 Mars 0.0747614694126973 0.0747607001248304 0.0747622387024426 13.6702752383652 13.6699951109919 2432973.671128444 1.72058722492234 839.551042151376 38.3517386623904 89.9416829356986 289971.458400352 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
1979-Aug-29 01:42 < 00:01 Earth 0.430375451381604 0.430372408860765 0.430378493903274 13.1721864751937 13.1717164569193 2444114.571069337 0.117173918120441 154.86679920256 42.4019995042401 -12.0416114572122 484997.557277915 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
1982-Aug-26 01:07 < 00:01 Earth 0.283521671576202 0.283520599560534 0.283522743593368 13.1726577284682 13.1719442769775 2445207.546472847 0.104229873637722 133.004891264029 51.5198498706201 83.3196037420013 883312.863520372 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
1985-Aug-25 11:19 < 00:01 Earth 0.372594396474659 0.372591897561015 0.372596895389003 14.7546036108176 14.7541189302315 2446302.971740935 0.166998472227121 130.831121037061 95.6005077890566 -26.5115536520147 420926.185355778 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
2037-Jul-16 02:22 00:03 Mars 0.0917020657175606 0.0916913992996178 0.0917127377163481 13.489238282275 13.4890068396389 2465255.598712036 2.6253757040547 1249.27609915599 33.3681745757233 -64.8376397696728 370017.395403492 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
2043-Aug-29 08:56 < 00:01 Earth 0.440131828596567 0.440111863249189 0.440151793985075 13.3019497617144 13.3014946461303 2467490.872405677 0.644508944516442 1017.99886377178 44.5032674693961 -12.0561462909257 305067.940395665 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
2046-Aug-26 09:54 < 00:01 Earth 0.283427549259428 0.283420558714759 0.283434540179934 13.2134591583059 13.2127476737767 2468583.912204982 0.0961621644287235 623.259138707259 30.4553408436153 -56.0923817977097 1133778.91810946 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
2049-Aug-25 19:20 < 00:01 Earth 0.342716738510254 0.342700074497759 0.342733402547315 14.4616043972066 14.4610667856002 2469679.305391750 0.178127058296992 843.515993640316 46.4521249901173 -9.91777102120861 180546.620306103 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
2107-Aug-29 21:31 00:01 Earth 0.405269766894365 0.405231122322457 0.405308411613157 13.1982357188629 13.1977375684832 2490866.396227525 1.13005811918885 1965.0985133993 39.8612934609685 -11.2963973969585 290871.229820454 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
2110-Aug-27 06:54 < 00:01 Earth 0.278675716932568 0.278673889793444 0.278677545578998 13.361766148537 13.3610505639258 2491959.787306541 0.153779259961002 1099.05225835408 32.7702744743869 -85.5584904632626 1300461.96885977 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
2113-Aug-26 17:07 < 00:01 Earth 0.391077521698444 0.391037815956541 0.391117227496123 14.9266886245104 14.9262321750802 2493055.213059659 0.172300346309662 1993.62461654668 50.3239409272641 -6.72197119049573 126086.734891314 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
2171-Aug-31 06:43 00:02 Earth 0.456683626423393 0.456621895379253 0.456745357590243 13.4225405738194 13.4221058942557 2514243.780090625 2.15688737823922 3100.84203828269 48.2049444649916 -6.91897585281576 165741.077460404 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
2174-Aug-27 21:28 < 00:01 Earth 0.292974658031614 0.292950500227534 0.292998819392122 13.2257569437287 13.2250692848512 2515336.394644495 0.553077106670812 2010.94486329395 28.5244211056463 -53.2023871140255 1201533.99327818 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
2177-Aug-26 21:58 < 00:01 Earth 0.347448589221367 0.347399985290633 0.347497193158323 14.3897600789677 14.3892271414516 2516431.415558326 0.0953389797377013 2424.79063164902 46.0551764410505 1.77198319398088 36883.1495093817 T 55 CATAB v2.0f-lin.ifort 2020-Jan-30 14:27:55 2020-Jan-30 14:28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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