Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
12285 (1991 FN2)
Classification: Main-belt Asteroid          SPK-ID: 2012285
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1015521879512044 3.8561e-08  
a 2.996524479999875 1.5958e-08 au
q 2.692220862806543 1.1883e-07 au
i 3.817938148149338 4.6335e-06 deg
node 157.4769196719563 5.0344e-05 deg
peri 335.8349510599498 5.3912e-05 deg
M 254.5204142226452 2.0586e-05 deg
tp 2459555.625384174855
(2021-Dec-07.12538417)
0.0001101 TDB
period 1894.633324829117
5.19
1.5135e-05
4.144e-08
d
yr
n .1900103810495731 1.5179e-09 deg/d
Q 3.300828097193208 1.7579e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1528  
   data-arc span      11370 days (31.13 yr)  
   first obs. used      1988-09-14  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51378  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 22:44:27  

Additional Information
 Earth MOID = 1.70695 au 
 Jupiter MOID = 1.7298 au 
 T_jup = 3.243 
[ 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 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 1.89469816378803 1.89469706366227 1.89469926391627 3.15473751996673 3.00969620492363 2421035.778484504 2.4566154394334 132.387235952294 12.7461654962076 73.6304274739307 3078805.83232528 T 25 CATAB v2.0f-lin.ifort 2019-Dec-03 22:44:37 2019-Dec-03 22:44
1925-May-29 10:00 00:02 Jupiter 1.94939752447923 1.94939652143821 1.94939852751991 2.66408185253475 2.49566075106279 2424299.916330598 2.24275669547443 48.5777489229871 25.9754644928201 -63.4576899870473 1758029.73915365 T 25 CATAB v2.0f-lin.ifort 2019-Dec-03 22:44:37 2019-Dec-03 22:44
1962-Jul-17 22:24 00:01 Jupiter 1.74164281997646 1.74164243925724 1.74164320069558 2.32100933759314 2.10105059269924 2437863.433350523 1.33407238240386 81.9404134636831 11.6335038758554 -88.3757589631986 2527898.89108161 T 25 CATAB v2.0f-lin.ifort 2019-Dec-03 22:44:37 2019-Dec-03 22:44
1999-Aug-31 03:40 < 00:01 Jupiter 1.91065553620412 1.91065510937582 1.91065596303242 3.21943936977946 3.07866197996825 2451421.653076983 0.398611551665731 36.1219665927535 13.2726360399046 77.3476140853585 3313185.84647232 T 25 CATAB v2.0f-lin.ifort 2019-Dec-03 22:44:37 2019-Dec-03 22:44
2008-Aug-08 20:24 < 00:01 Jupiter 1.91985531249922 1.91985499914459 1.91985562585384 2.59904776184878 2.42335875453021 2454687.350083619 0.238895134853574 42.571104711993 6.4496766157854 -84.293877076761 3827073.39660134 T 25 CATAB v2.0f-lin.ifort 2019-Dec-03 22:44:37 2019-Dec-03 22:44
2045-Sep-26 09:52 < 00:01 Jupiter 1.74397282094648 1.74397243622644 1.74397320566641 2.36260115244231 2.1472105093005 2468249.911333770 0.801172969701628 55.4578356139562 11.7078214989515 -89.4570474114951 2555831.6363812 T 25 CATAB v2.0f-lin.ifort 2019-Dec-03 22:44:37 2019-Dec-03 22:44
2082-Nov-11 00:36 00:02 Jupiter 1.93595452525015 1.93595383243463 1.93595521806644 3.31348699365273 3.17870291833754 2481809.525043374 1.69317918288439 84.965321637142 12.8513474461455 74.4322216747271 3365841.99032639 T 25 CATAB v2.0f-lin.ifort 2019-Dec-03 22:44:37 2019-Dec-03 22:44
2091-Oct-20 16:58 00:02 Jupiter 1.89372997418971 1.89372917388105 1.89373077449837 2.54728558157259 2.36518691507367 2485075.206823103 1.96538523890732 58.1855822662033 17.4541789185616 -69.3232312902109 2644704.71461045 T 25 CATAB v2.0f-lin.ifort 2019-Dec-03 22:44:37 2019-Dec-03 22:44
2128-Dec-07 11:52 00:03 Jupiter 1.73546128685269 1.7354608875376 1.73546168616807 2.37523603297122 2.16000252496754 2498636.994587768 2.90120159283365 168.342607329247 11.8284203349104 -87.569298035249 2508707.88284264 T 25 CATAB v2.0f-lin.ifort 2019-Dec-03 22:44:37 2019-Dec-03 22:44
2166-Jan-20 15:59 00:04 Jupiter 1.95951304268957 1.95951149839125 1.95951458699201 3.39647150203476 3.26672545307122 2512195.166045858 3.73362079494625 169.146600407719 14.0338630419292 69.6855516416145 3202879.23095512 T 25 CATAB v2.0f-lin.ifort 2019-Dec-03 22:44:37 2019-Dec-03 22:44
2174-Dec-31 10:52 00:04 Jupiter 1.87499610004524 1.87499456667612 1.87499763341543 2.52019515329616 2.33407177437306 2515461.952499543 4.07275074477369 113.956730753659 17.7694116982195 -64.7775491802514 2545410.19022509 T 25 CATAB v2.0f-lin.ifort 2019-Dec-03 22:44:37 2019-Dec-03 22:44

Alternate Designations
 1991 FN2 = 1988 RL11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-21 04:14 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin