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100031 (1991 FM2)
Classification: Main-belt Asteroid          SPK-ID: 2100031
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3892458494885727 4.5418e-08  
a 3.077660568163465 2.3104e-08 au
q 1.879693965871194 1.366e-07 au
i 22.00796802464565 7.5178e-06 deg
node 171.0355431848034 1.5268e-05 deg
peri 312.3609773141052 1.8326e-05 deg
M 214.7324533487887 1.1647e-05 deg
tp 2459996.284743083474
(2023-Feb-20.78474308)
7.0061e-05 TDB
period 1972.102607321495
5.40
2.2207e-05
6.08e-08
d
yr
n .18254628266475 2.0556e-09 deg/d
Q 4.275627170455736 3.2097e-08 au
  Orbit Determination Parameters
   # obs. used (total)      460  
   data-arc span      10803 days (29.58 yr)  
   first obs. used      1991-02-10  
   last obs. used      2020-09-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55716  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:30:16  

Additional Information
 Earth MOID = .952465 au 
 Jupiter MOID = 1.21388 au 
 T_jup = 3.004 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457111.5 (2015-Mar-30.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3858362355037849 4.4956e-08  
q 1.893558235333012 1.3444e-07 au
tp 2458019.569917810180
(2017-Sep-23.06991781)
5.6837e-05 TDB
node 171.719665169214 1.5182e-05 deg
peri 311.588564619557 1.8483e-05 deg
i 21.88977314081735 7.5622e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      460  
   data-arc span      10803 days (29.58 yr)  
   first obs. used      1991-02-10  
   last obs. used      2020-09-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55716  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:30:16  

Additional Information
 Jupiter MOID = 1.21388 au 
 T_jup = 3.004 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.021069723255075E-15 -6.01373192352834E-15 8.797448770223443E-13 -3.189604602732452E-15 1.367361205446555E-13 -9.630326673438972E-15
q -6.01373192352834E-15 1.807422447962312E-14 -2.212549451655261E-12 -2.130513439964306E-16 -3.492510883762393E-13 2.500821000370124E-14
tp 8.797448770223443E-13 -2.212549451655261E-12 3.230483576651879E-9 -1.391608654790739E-12 6.161448196295953E-10 2.469177379748049E-12
node -3.189604602732452E-15 -2.130513439964306E-16 -1.391608654790739E-12 2.305035092866969E-10 -2.128228428091775E-10 2.112835273928915E-11
peri 1.367361205446555E-13 -3.492510883762393E-13 6.161448196295953E-10 -2.128228428091775E-10 3.416146181632389E-10 -1.852863637914926E-11
i -9.630326673438972E-15 2.500821000370124E-14 2.469177379748049E-12 2.112835273928915E-11 -1.852863637914926E-11 5.718622640274814E-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 14.98   n/a E2021B55  

100031 (1991 FM2)          Discovered 1991-Mar-20 by Debehogne, H. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ 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
1903-Feb-22 02:25 00:02 Jupiter 1.25589371129497 1.25589242237604 1.25589500022754 5.71646560840216 5.59724065440488 2416167.600655794 1.77583103569117 359.989105904629 49.9362588360682 -84.6368344925592 1641123.70528982 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:17 2021-Apr-13 15:30
1962-Apr-10 08:35 < 00:01 Jupiter 1.35321344181378 1.35321162968835 1.35321525394299 6.29145392063838 6.19116500564727 2437764.857478996 0.784886614498716 179.172584951251 59.5269821672187 -67.676765982187 1595610.28150611 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:17 2021-Apr-13 15:30
2010-Sep-09 06:14 < 00:01 Jupiter 1.70862558721836 1.70862417764168 1.70862699681524 5.08097763498692 4.98245594383111 2455448.759493119 0.692315513718712 319.346962961718 20.8392065843465 77.8976514528187 2439277.14180834 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:17 2021-Apr-13 15:30
2021-Mar-28 05:18 < 00:01 Jupiter 1.83402960585146 1.83402821117744 1.83403100052547 7.6568166866828 7.59626013333641 2459301.720636875 0.539609566342239 85.6787723071252 62.1169430377939 -60.4529138947321 1993677.58604456 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:17 2021-Apr-13 15:30
2069-Jul-21 06:59 00:01 Jupiter 1.29883971667942 1.29883807594308 1.29884135743113 5.27930830579368 5.15430116820752 2476948.791066323 1.23877876438569 242.896950522125 13.6865300357051 70.7085001799106 2662792.41880246 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:17 2021-Apr-13 15:30
2128-Sep-18 03:15 00:02 Jupiter 1.19734701825249 1.19734534646558 1.19734869009092 5.50039714452521 5.37024549027221 2498556.635187298 2.45118633577503 449.901825647153 34.7868663018205 80.0386650473249 1877612.78418884 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:17 2021-Apr-13 15:30
2187-Dec-28 14:39 00:06 Jupiter 1.17091367843228 1.17091079824934 1.17091655906162 5.5943112899908 5.4634738854072 2520207.110125247 6.19599888665015 1211.56241686337 38.5323121729043 83.0422348391767 1812088.7524417 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:17 2021-Apr-13 15:30

Alternate Designations
 1991 FM2 = 2002 JD37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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