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285263 (1998 QE2)
Classification: Amor [NEO, PHA]          SPK-ID: 2285263
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 128 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5714453370310032 9.5591e-09  
a 2.423375854460641 2.1429e-08 AU
q 1.038549022555585 1.9671e-08 AU
i 12.85414218766311 2.7418e-06 deg
node 250.1536918849886 1.491e-06 deg
peri 345.66382193723 7.5467e-06 deg
M 96.11162084493809 1.8374e-06 deg
tp 2456432.622698526370
(2013-May-20.12269853)
6.3192e-06 JED
period 1377.937728718283
3.77
1.8277e-05
5.004e-08
d
yr
n .2612599920134717 3.4653e-09 deg/d
Q 3.808202686365698 3.3674e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1757  
   data-arc span      5531 days (15.14 yr)  
   first obs. used      1998-08-19  
   last obs. used      2013-10-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .44966  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Dec-22 15:32:42  

Additional Information
 Earth MOID = .0345524 AU 
 T_jup = 3.239 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.3 mag n/a MPO268323  
rotation period rot_per 4.751 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Hills, K. (2013) Posting on CALL web site: http://www.MinorPlanet.info/call.html]

285263 (1998 QE2)          Discovered 1998-Aug-19 by LINEAR at Socorro (704)
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

[ 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
1905-Aug-24 01:14 < 00:01 Jupiter 1.24389076715217 1.24389075408113 1.2438907802294 4.41505803347495 4.25803303425495 2417081.551057822 0.394108488209271 10.4465950277858 1.65101075104195 -62.7453690858313 7403074.12773773 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
1911-Apr-09 07:21 < 00:01 Earth 0.381583804917265 0.381577361303662 0.381590248535775 16.5213883119259 16.5209656613755 2419135.806453496 0.162169827133581 322.99422415467 3.79431341901284 15.3585285978827 3304895.4190443 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
1917-Feb-25 15:47 < 00:01 Jupiter 1.73864855035987 1.73864649141498 1.73865060929914 6.40880627307325 6.33233384917419 2421285.157539594 0.0563832860097694 27.3425925930849 1.50646087833347 -16.603128168936 5330989.59348683 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
1926-Jul-09 08:58 < 00:01 Earth 0.478541343830566 0.478538702283324 0.478543985377559 21.6310925825811 21.6308351775567 2424705.873924625 0.0449380231012421 130.312630719507 1.11008096963829 -6.07696412975939 6082847.50779983 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
1960-Apr-03 21:30 < 00:01 Earth 0.378633254616863 0.378625673457082 0.378640835791189 17.4400341672703 17.4396306600643 2437028.395668181 0.196789323365526 387.442932338987 4.35105379538629 18.449002151438 3472131.8020502 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
1975-Jun-08 01:24 < 00:01 Earth 0.0884341319440153 0.088425072301899 0.0884431916685048 11.2416884703199 11.2390079896881 2442571.558411637 0.59956516948439 372.074880317854 1.06631089864105 22.8361550560871 3414155.91400085 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
1977-Apr-05 05:07 < 00:01 Jupiter 1.6973917465014 1.69738887785639 1.69739461514294 5.14967395135143 5.05184258326855 2443238.712946974 0.578057613437607 30.4382241366874 1.23107776316881 8.48583628331771 2665620.71422521 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
1988-Oct-01 08:07 < 00:01 Jupiter 1.2322360296644 1.23223549063442 1.23223656869495 4.42258870604635 4.26433086119247 2447435.838522822 0.327684946551449 5.60457833635127 1.57161502746995 -78.0880786906757 8484943.2395224 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
1994-Jun-28 00:01 < 00:01 Earth 0.347599851103465 0.347595172661124 0.347604529540473 17.1886569255835 17.1882109650098 2449531.500641242 0.114219153690161 220.08336706224 0.89470606142513 -2.30510595991127 1964369.82737401 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2000-Apr-09 13:43 < 00:01 Jupiter 1.63387192960575 1.63387092523539 1.63387293397939 6.09964908932314 6.01405773853983 2451644.071298439 0.0582920023683555 12.5554450814008 1.68667555004375 -19.0393049919832 5138635.59522683 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2013-May-31 20:59 < 00:01 Earth 0.0391738388274053 0.0391738028517044 0.0391738748031061 10.5801506303136 10.5737199580419 2456444.374547256 0.00222077988801755 1.25598152780587 0.60239360121398 -5.94401650915753 3265304.42291053 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2028-Jul-12 08:55 < 00:01 Earth 0.490264913847377 0.490261298276186 0.490268529418489 22.2168700993071 22.2166254741834 2461964.871607820 0.067664685662457 179.414902276814 1.45939957317206 -7.63419573956357 5974361.38008667 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2047-Apr-04 13:04 < 00:01 Earth 0.414662946300026 0.414655668773603 0.414670223837129 18.5654917918498 18.5651456813951 2468805.044364789 0.166499653783423 371.901413019938 4.20422008902321 16.9466589405167 3688581.55581184 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2060-Jun-22 00:30 < 00:01 Jupiter 1.99995136754304 1.99994818417016 1.99995455091126 6.02440322852212 5.95368718922356 2473632.520939158 0.320825550307915 41.1406962994181 1.13953627444818 6.49060739428297 3018794.73710517 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2062-Jun-30 18:42 < 00:01 Earth 0.374854801809389 0.374845783348576 0.374863820255659 18.0063426251666 18.0059478693579 2474371.279223674 0.208480651824065 430.584841053612 1.15489265876614 -3.77704414913813 2716632.84866037 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2071-Dec-16 02:36 < 00:01 Jupiter 1.30855603214444 1.30855457940634 1.30855748488466 4.48280746736555 4.33600872462294 2477826.608183647 0.590458684100043 12.754236163553 0.632911643026131 40.6002394180783 15049245.1532269 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2083-Jul-02 10:40 < 00:01 Jupiter 1.33587975094515 1.33587767368289 1.3358818282122 5.02415433707309 4.89632667271146 2482042.944343503 0.396535936262109 26.1329215457401 1.87138526092062 -28.8099983219985 4332923.45861065 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2085-Apr-30 05:29 < 00:01 Earth 0.213969928679151 0.213958733308628 0.213981123964334 12.1807518823168 12.1797295225646 2482710.728595716 0.531406479322742 475.89510028135 2.13145304759587 7.54149786114228 1452132.43345538 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2119-May-16 17:16 < 00:01 Earth 0.0875805464850354 0.0875694076473798 0.0875916852503239 10.5995772395207 10.5967066243571 2495144.219208662 0.92858794236155 397.131623919039 1.96271047157806 -5.4451839732948 433954.457764457 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2134-Jun-22 18:27 < 00:01 Earth 0.208054738925061 0.208053563713401 0.208055914135754 14.1634469792119 14.1625427476813 2500660.268692029 0.0416424812187359 51.4290598034288 1.00607393355446 -2.79543155428726 1271529.60861033 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2153-Apr-12 05:01 < 00:01 Earth 0.406649306531036 0.406634897102907 0.406663715969693 17.7358634460199 17.7354940055162 2507528.708816600 0.328956515077 717.065775358116 3.69797704281665 13.4206374238753 3232055.83875266 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2155-Mar-11 06:41 < 00:01 Jupiter 1.54236279246504 1.542359193774 1.54236639115359 4.94424246432206 4.83189294924273 2508226.778624215 0.90945492437058 37.5240517999766 0.857519148122861 17.2455212364377 6546752.72030414 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2166-Sep-11 05:04 00:01 Jupiter 1.23598708601716 1.23598538798273 1.23598878408853 4.60190442381525 4.4504969846579 2512428.711180116 1.28518923524271 32.7019538974154 1.98046886260023 -50.1419262863571 5502935.94285711 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2172-May-23 15:50 00:02 Earth 0.0711651650799177 0.071147961865475 0.0711823751451337 9.99523058487993 9.99148401808079 2514510.159752321 2.08368073248329 937.977543886777 1.33666847850948 -51.9807294859558 4185563.60084081 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
2178-Mar-16 09:40 00:01 Jupiter 1.78292118206344 1.78290482183818 1.78293754222896 6.5581352556326 6.48529002015598 2516632.902849442 1.31900132856243 229.357922203311 1.85356050865894 -11.3712819376712 3075066.75011949 T 128 CATAB v2.0c-linF95 2013-Dec-22 15:33:19 2013-Dec-22 15:33
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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