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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1549473217439297 3.8574e-08  
a 3.200346648693821 2.1427e-08 au
q 2.704461506826553 1.2465e-07 au
i 1.555372490486715 5.0781e-06 deg
node 54.77546909533537 0.00016313 deg
peri 52.63044240613691 0.00016399 deg
M 54.70526986986611 1.7325e-05 deg
tp 2458882.724344113571
(2020-Feb-03.22434411)
9.9292e-05 TDB
period 2091.192245120982
5.73
2.1002e-05
5.75e-08
d
yr
n .1721506001372786 1.7289e-09 deg/d
Q 3.69623179056109 2.4747e-08 au
  Orbit Determination Parameters
   # obs. used (total)      955  
   data-arc span      8339 days (22.83 yr)  
   first obs. used      1998-03-20  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5425  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 07:41:09  

Additional Information
 Earth MOID = 1.72148 au 
 Jupiter MOID = 1.43659 au 
 T_jup = 3.175 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456496.5 (2013-Jul-23.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .155360395882629 3.8629e-08  
q 2.70194667287955 1.2478e-07 au
tp 2456798.718450500149
(2014-May-21.21845050)
9.2577e-05 TDB
node 54.85563568409956 0.00016286 deg
peri 53.8492560861971 0.0001637 deg
i 1.557056947035198 5.0822e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      955  
   data-arc span      8339 days (22.83 yr)  
   first obs. used      1998-03-20  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5425  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 07:41:09  

Additional Information
 Jupiter MOID = 1.43659 au 
 T_jup = 3.175 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.492192728309443E-15 -4.77070761390723E-15 -4.042337520379057E-13 -2.001119045001012E-15 -7.067672898794604E-14 -1.281572737647485E-16
q -4.77070761390723E-15 1.556909508752973E-14 1.582002013481024E-12 5.833568006226815E-15 2.661939230500052E-13 5.239019004560255E-16
tp -4.042337520379057E-13 1.582002013481024E-12 8.570519029343289E-9 6.071660555413997E-12 1.560413009446549E-9 -3.063807351870032E-13
node -2.001119045001012E-15 5.833568006226815E-15 6.071660555413997E-12 2.652284057519126E-8 -2.651135214860937E-8 -4.895091464132508E-11
peri -7.067672898794604E-14 2.661939230500052E-13 1.560413009446549E-9 -2.651135214860937E-8 2.679838394717211E-8 4.886820862263809E-11
i -1.281572737647485E-16 5.239019004560255E-16 -3.063807351870032E-13 -4.895091464132508E-11 4.886820862263809E-11 2.582861102598992E-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

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