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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1550087560830445 3.8845e-08  
a 3.200942506206871 2.177e-08 au
q 2.704768390026401 1.2586e-07 au
i 1.555336079045727 5.1313e-06 deg
node 54.78086265507403 0.00016365 deg
peri 52.69648011489923 0.00016451 deg
M 20.21854045262572 1.7418e-05 deg
tp 2458883.020378715130
(2020-Feb-03.52037871)		 0.00010069 TDB
period 2091.776296199495
5.73		 2.134e-05
5.843e-08		 d
yr
n .1721025334564104 1.7558e-09 deg/d
Q 3.697116622387342 2.5145e-08 au
   Orbit Determination Parameters
   # obs. used (total)      925  
   data-arc span      7989 days (21.87 yr)  
   first obs. used      1998-03-20  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54301  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:35:13  

Additional Information
 Earth MOID = 1.72192 au 
 Jupiter MOID = 1.43569 au 
 T_jup = 3.175 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456439.5 (2013-May-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1553008638636548 3.891e-08  
q 2.701854175027243 1.2595e-07 au
tp 2456798.845106350867
(2014-May-21.34510635)		 9.3533e-05 TDB
node 54.85460609566734 0.00016338 deg
peri 53.87826518256743 0.00016423 deg
i 1.557136121058126 5.1357e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      925  
   data-arc span      7989 days (21.87 yr)  
   first obs. used      1998-03-20  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54301  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:35:13  

Additional Information
 Jupiter MOID = 1.43569 au 
 T_jup = 3.175 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.513984322555636E-15 -4.84955718786163E-15 -4.313318126251677E-13 -2.34182686610312E-15 -7.343221551027472E-14 -1.290260873611116E-16
q -4.84955718786163E-15 1.586294651437343E-14 1.712083266430387E-12 6.702489342570938E-15 2.81156709300785E-13 5.3174736833162E-16
tp -4.313318126251677E-13 1.712083266430387E-12 8.748341308883489E-9 7.222751793634575E-12 1.585982001739503E-9 -2.986959494592624E-13
node -2.34182686610312E-15 6.702489342570938E-15 7.222751793634575E-12 2.669190235318629E-8 -2.668014611327765E-8 -4.802955751602438E-11
peri -7.343221551027472E-14 2.81156709300785E-13 1.585982001739503E-9 -2.668014611327765E-8 2.697102180406821E-8 4.794807931013343E-11
i -1.290260873611116E-16 5.3174736833162E-16 -2.986959494592624E-13 -4.802955751602438E-11 4.794807931013343E-11 2.637565239951943E-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 14.6   n/a MPO459396  
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

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