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85601 (1998 FU121)
Classification: Outer Main-belt Asteroid          SPK-ID: 2085601
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1549473186763394 3.6234e-08  
a 3.200346653852259 2.0215e-08 au
q 2.704461521003056 1.1601e-07 au
i 1.555373073983944 4.911e-06 deg
node 54.77548888185028 0.00015836 deg
peri 52.63042416724259 0.00015923 deg
M 54.70526896989877 1.7186e-05 deg
tp 2458882.724348573058
(2020-Feb-03.22434857)
9.8581e-05 TDB
period 2091.192250176974
5.73
1.9814e-05
5.425e-08
d
yr
n .1721505997210605 1.6311e-09 deg/d
Q 3.696231786701461 2.3348e-08 au
  Orbit Determination Parameters
   # obs. used (total)      976  
   data-arc span      8402 days (23.00 yr)  
   first obs. used      1998-03-20  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53862  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 08:07:03  

Additional Information
 Earth MOID = 1.72148 au 
 Jupiter MOID = 1.43659 au 
 T_jup = 3.175 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456681.5 (2014-Jan-24.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1557983293667033 3.6237e-08  
q 2.702405972427412 1.1625e-07 au
tp 2456798.033037007310
(2014-May-20.53303701)
9.2005e-05 TDB
node 54.85289558726724 0.00015813 deg
peri 53.6958613737973 0.000159 deg
i 1.556561865255631 4.9131e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      976  
   data-arc span      8402 days (23.00 yr)  
   first obs. used      1998-03-20  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53862  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 08:07:03  

Additional Information
 Jupiter MOID = 1.43659 au 
 T_jup = 3.175 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.313119655431665E-15 -4.168691422435685E-15 -2.913185735195352E-13 -3.986947512683396E-16 -5.651144678893096E-14 -7.217245962545074E-17
q -4.168691422435685E-15 1.351421612210277E-14 1.193911977120248E-12 2.068025412525774E-15 2.216801914552116E-13 2.653867485100458E-16
tp -2.913185735195352E-13 1.193911977120248E-12 8.46488808222202E-9 -3.140475625757852E-13 1.547961283693446E-9 -4.71769431947266E-13
node -3.986947512683396E-16 2.068025412525774E-15 -3.140475625757852E-13 2.500582508392407E-8 -2.499610805110026E-8 -9.918195039241585E-11
peri -5.651144678893096E-14 2.216801914552116E-13 1.547961283693446E-9 -2.499610805110026E-8 2.528027027103422E-8 9.905443675423546E-11
i -7.217245962545074E-17 2.653867485100458E-16 -4.71769431947266E-13 -9.918195039241585E-11 9.905443675423546E-11 2.413882876545379E-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 14.61   n/a E2021B10  
diameter diameter 6.716 km 0.305 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.039   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85601 (1998 FU121)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ 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
1901-Sep-07 15:56 00:04 Jupiter 1.59590703883824 1.5959062117565 1.59590786592015 1.77268886421363 1.44254367801568 2415635.164204612 3.63854303600119 99.0985893256102 26.1000871198335 83.3297184553307 2327762.74361213 T 31 CATAB v2.0g-lin.ifort 2021-May-04 08:07:07 2021-May-04 08:07
1913-Feb-15 22:00 00:03 Jupiter 1.66071925120596 1.66071813781408 1.6607203645966 1.90917859085521 1.62015302389088 2419814.416684346 3.05848126852384 57.8796538715205 15.7338875584115 84.0195535338124 1300274.07053232 T 31 CATAB v2.0g-lin.ifort 2021-May-04 08:07:07 2021-May-04 08:07
1924-Jul-10 12:31 00:03 Jupiter 1.7698292657441 1.76982802333131 1.76983050815599 2.20769271339604 1.97907230893157 2423977.021620546 2.62846291759937 54.9969183846871 13.0616216988856 79.4378498665011 1260122.36013977 T 31 CATAB v2.0g-lin.ifort 2021-May-04 08:07:07 2021-May-04 08:07
1935-Nov-14 05:44 00:02 Jupiter 1.90816358168086 1.90816235904377 1.90816480431772 2.65886881513721 2.48632162498527 2428120.738930646 2.25143869795919 70.9402882332967 20.9839511918722 65.6498780849615 1708263.43684915 T 31 CATAB v2.0g-lin.ifort 2021-May-04 08:07:07 2021-May-04 08:07
2059-Feb-27 23:50 00:01 Jupiter 1.95744558006497 1.95744486822898 1.95744629190097 3.88274760003823 3.76965414043454 2473152.492934268 1.25862994338101 55.6475384474908 25.2597585060118 72.2577274617905 2534182.39292369 T 31 CATAB v2.0g-lin.ifort 2021-May-04 08:07:07 2021-May-04 08:07
2070-May-11 02:24 00:02 Jupiter 1.77119281308606 1.77119202727178 1.77119359890043 2.95139087116955 2.78464810050281 2477242.599912195 1.6025891406819 74.4404673482728 19.5863492340769 79.8832537715463 2047401.65450481 T 31 CATAB v2.0g-lin.ifort 2021-May-04 08:07:07 2021-May-04 08:07
2081-Aug-18 14:26 00:02 Jupiter 1.63137839954195 1.6313776832501 1.6313791158338 2.28156155007218 2.04134999692093 2481360.101290327 1.94664481779771 90.101193617149 5.00204374746778 -88.0311169093254 1834267.15672887 T 31 CATAB v2.0g-lin.ifort 2021-May-04 08:07:07 2021-May-04 08:07
2092-Dec-29 20:22 00:02 Jupiter 1.55112086782109 1.55112035487216 1.55112138076994 1.90217319075647 1.58937734591661 2485511.348911521 2.35102893053606 109.965362368715 28.2808527919016 -76.8180535512587 1922030.12187594 T 31 CATAB v2.0g-lin.ifort 2021-May-04 08:07:07 2021-May-04 08:07
2104-Jun-07 22:26 00:03 Jupiter 1.52791861721291 1.52791827430611 1.5279189601197 1.7450336542813 1.39155136246626 2489688.434943796 2.92891584256297 136.638932191372 42.3331434224617 -76.2464396553848 2441373.57834568 T 31 CATAB v2.0g-lin.ifort 2021-May-04 08:07:07 2021-May-04 08:07
2115-Nov-26 16:05 00:04 Jupiter 1.54554059371938 1.54553985369435 1.54554133374731 1.72953382575032 1.37666317720947 2493877.170029245 3.7784511886037 153.097831963144 36.0034528335142 -85.7790954874673 2856283.51784561 T 31 CATAB v2.0g-lin.ifort 2021-May-04 08:07:07 2021-May-04 08:07
2127-May-09 21:16 00:05 Jupiter 1.60252073785563 1.60251912347056 1.60252235224088 1.84171366610842 1.52800409980365 2498059.385785159 4.91686458933914 128.416407261131 20.69657975543 88.4512288944698 1903324.04881143 T 31 CATAB v2.0g-lin.ifort 2021-May-04 08:07:07 2021-May-04 08:07
2138-Oct-03 05:43 00:06 Jupiter 1.70849486063306 1.70849216522078 1.70849755604077 2.12454702078998 1.87674124104268 2502223.738109853 6.21831753179542 66.7237655778302 32.0556925741556 -68.4233968860041 688435.655785465 T 31 CATAB v2.0g-lin.ifort 2021-May-04 08:07:07 2021-May-04 08:07
2150-Feb-02 10:11 00:07 Jupiter 1.8586038834306 1.85860023633775 1.85860753051933 2.60350805178963 2.42214639093352 2506363.924651171 7.44477408340369 128.839039708736 38.9123192580326 33.0404295367367 724959.06965204 T 31 CATAB v2.0g-lin.ifort 2021-May-04 08:07:07 2021-May-04 08:07
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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