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 ]

[ show orbit diagram ]
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

[ show close-approach data ]
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-Nov-27 07:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin