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12285 (1991 FN2)
Classification: Main-belt Asteroid          SPK-ID: 2012285
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1015522158329592 3.6642e-08  
a 2.996524489275618 1.4958e-08 au
q 2.692220787591952 1.1468e-07 au
i 3.817930215446752 4.1609e-06 deg
node 157.4769165026628 4.9528e-05 deg
peri 335.8349416952015 5.2975e-05 deg
M 254.5204267132302 1.9703e-05 deg
tp 2459555.625321016111
(2021-Dec-07.12532102)
0.00010509 TDB
period 1894.633333626374
5.19
1.4187e-05
3.884e-08
d
yr
n .1900103801673073 1.4228e-09 deg/d
Q 3.300828190959283 1.6477e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1668  
   data-arc span      11734 days (32.13 yr)  
   first obs. used      1988-09-14  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49936  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:53:58  

Additional Information
 Earth MOID = 1.70695 au 
 Jupiter MOID = 1.7298 au 
 T_jup = 3.243 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457086.5 (2015-Mar-05.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09865892857691412 3.7054e-08  
q 2.703006705329676 1.1573e-07 au
tp 2457662.271302308049
(2016-Sep-30.77130231)
0.0001037 TDB
node 157.5793004328193 4.9457e-05 deg
peri 336.2514393473758 5.3072e-05 deg
i 3.81886944977506 4.1643e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1668  
   data-arc span      11734 days (32.13 yr)  
   first obs. used      1988-09-14  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49936  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:53:58  

Additional Information
 Jupiter MOID = 1.7298 au 
 T_jup = 3.243 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.373001320406041E-15 -4.261658847527851E-15 5.211508737131362E-13 -2.119927251243358E-17 1.540325889596121E-13 -5.084168043360721E-16
q -4.261658847527851E-15 1.339440275763973E-14 -1.271051684664558E-12 2.918959574565039E-15 -4.27950588117158E-13 1.91780189047931E-15
tp 5.211508737131362E-13 -1.271051684664558E-12 1.075468824826558E-8 5.186149632841246E-12 2.00053214821414E-9 2.157112590647724E-12
node -2.119927251243358E-17 2.918959574565039E-15 5.186149632841246E-12 2.445978971374526E-9 -2.439359240114301E-9 4.053614346720561E-11
peri 1.540325889596121E-13 -4.27950588117158E-13 2.00053214821414E-9 -2.439359240114301E-9 2.8166035359087E-9 -4.007784461242507E-11
i -5.084168043360721E-16 1.91780189047931E-15 2.157112590647724E-12 4.053614346720561E-11 -4.007784461242507E-11 1.734151947634912E-11

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 13.7   n/a MPO416845  

12285 (1991 FN2)          Discovered 1991-Mar-20 by Debehogne, H. at La Silla
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19

[ 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
1916-Jun-21 06:41 00:02 Jupiter 1.89469800808506 1.8946969902942 1.89469902587818 3.15473650881646 3.0096951328382 2421035.778149612 2.30762087090396 124.710969132097 12.0653978411932 73.904568693983 3206481.94894056 T 26 CATAB v2.0f-lin.ifort 2020-Nov-13 02:54:05 2020-Nov-13 02:54
1925-May-29 09:59 00:02 Jupiter 1.94939755214524 1.94939658478128 1.94939851950886 2.66408174809963 2.49566064205071 2424299.916005143 2.08986268945698 45.2139712302696 24.6575036357311 -62.4815012947513 1789044.93609776 T 26 CATAB v2.0f-lin.ifort 2020-Nov-13 02:54:05 2020-Nov-13 02:54
1962-Jul-17 22:24 00:01 Jupiter 1.74164276789435 1.74164241256046 1.74164312322814 2.32100827813101 2.10104941540012 2437863.433155259 1.253199889443 77.53454308859 10.4324284764788 -88.2990190695512 2760936.17401178 T 26 CATAB v2.0f-lin.ifort 2020-Nov-13 02:54:05 2020-Nov-13 02:54
1999-Aug-31 03:40 < 00:01 Jupiter 1.9106555365161 1.91065513051928 1.91065594251291 3.21943909876319 3.07866169658277 2451421.653023002 0.388767684352074 33.9319974140699 12.5258675686805 76.6025553846097 3478771.13471988 T 26 CATAB v2.0f-lin.ifort 2020-Nov-13 02:54:05 2020-Nov-13 02:54
2008-Aug-08 20:24 < 00:01 Jupiter 1.91985517171182 1.9198548655244 1.91985547789923 2.59904704154944 2.42335796865979 2454687.350056128 0.231502296902979 39.956559125148 6.28592337489175 -83.771192108658 3940534.37541963 T 26 CATAB v2.0f-lin.ifort 2020-Nov-13 02:54:05 2020-Nov-13 02:54
2045-Sep-26 09:52 < 00:01 Jupiter 1.74397277364177 1.74397241660128 1.74397313068217 2.36260030048296 2.14720956574407 2468249.911440711 0.738458257949692 52.8741380514321 10.4093690797185 89.8916436545928 2721514.11094892 T 26 CATAB v2.0f-lin.ifort 2020-Nov-13 02:54:05 2020-Nov-13 02:54
2082-Nov-11 00:36 00:02 Jupiter 1.93595469656486 1.93595403529691 1.93595535783347 3.31348765318294 3.17870361801335 2481809.525284159 1.55817146286846 77.469578397199 12.4518725079525 73.8734365936849 3438331.63415273 T 26 CATAB v2.0f-lin.ifort 2020-Nov-13 02:54:05 2020-Nov-13 02:54
2091-Oct-20 16:58 00:02 Jupiter 1.89372967594733 1.89372896410599 1.89373038778877 2.54728442174622 2.36518563616816 2485075.207074667 1.83211044659712 55.0780191132652 15.6874482270336 -69.7623394843854 2998634.4592734 T 26 CATAB v2.0f-lin.ifort 2020-Nov-13 02:54:05 2020-Nov-13 02:54
2128-Dec-07 11:53 00:03 Jupiter 1.73546127492917 1.73546088703986 1.73546166281916 2.37523543298623 2.16000186364457 2498636.994983432 2.69421574582795 156.857649744568 10.8323616812583 -87.7626563909978 2677681.84472916 T 26 CATAB v2.0f-lin.ifort 2020-Nov-13 02:54:05 2020-Nov-13 02:54
2166-Jan-20 16:00 00:03 Jupiter 1.95951339016666 1.95951194191818 1.95951483841864 3.39647303256565 3.26672706785542 2512195.166567347 3.46001598201143 156.1022950017 13.4008139637801 69.4196042531861 3328238.85093454 T 26 CATAB v2.0f-lin.ifort 2020-Nov-13 02:54:05 2020-Nov-13 02:54
2174-Dec-31 10:52 00:04 Jupiter 1.87499565907506 1.87499426839546 1.87499704975563 2.52019355355603 2.3340700015478 2515461.953047941 3.79559746479983 107.017420883518 16.2574937720719 -65.2155113636441 2786933.02210408 T 26 CATAB v2.0f-lin.ifort 2020-Nov-13 02:54:05 2020-Nov-13 02:54

Alternate Designations
 1991 FN2 = 1988 RL11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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