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173185 (1998 FB72)
Classification: Main-belt Asteroid          SPK-ID: 2173185
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1588155617233314 4.4157e-08  
a 2.369283732904498 1.0695e-08 au
q 1.993004605981319 1.0497e-07 au
i 3.1378748122801 4.6474e-06 deg
node 38.71828150442925 6.5956e-05 deg
peri 192.7265388536208 6.845e-05 deg
M 353.3464081148614 1.4885e-05 deg
tp 2459025.119413001800
(2020-Jun-24.61941300)
5.5016e-05 TDB
period 1332.060762615179
3.65
9.0193e-06
2.469e-08
d
yr
n .2702579417572717 1.8299e-09 deg/d
Q 2.745562859827678 1.2393e-08 au
  Orbit Determination Parameters
   # obs. used (total)      349  
   data-arc span      8151 days (22.32 yr)  
   first obs. used      1998-02-28  
   last obs. used      2020-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55989  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:24:12  

Additional Information
 Earth MOID = .982535 au 
 Jupiter MOID = 2.24547 au 
 T_jup = 3.527 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457777.5 (2017-Jan-24.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1589051327943477 4.4145e-08  
q 1.992725381249182 1.0495e-07 au
tp 2457691.782554992153
(2016-Oct-30.28255499)
5.8727e-05 TDB
node 38.7284680756517 6.594e-05 deg
peri 192.4512934139846 6.843e-05 deg
i 3.138459217195457 4.6479e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      349  
   data-arc span      8151 days (22.32 yr)  
   first obs. used      1998-02-28  
   last obs. used      2020-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55989  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:24:12  

Additional Information
 Jupiter MOID = 2.24547 au 
 T_jup = 3.527 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.948792922452827E-15 -4.616243487580973E-15 -3.470476866791835E-13 1.096329062069512E-14 -2.722061960133392E-14 -1.37923048475003E-15
q -4.616243487580973E-15 1.101512698863733E-14 5.694741670360582E-13 -2.729257521337114E-14 -1.020334848602092E-14 3.119756768099239E-15
tp -3.470476866791835E-13 5.694741670360582E-13 3.448878023078164E-9 6.256001037962531E-14 1.078056829188691E-9 3.191632976207987E-12
node 1.096329062069512E-14 -2.729257521337114E-14 6.256001037962531E-14 4.348050095469527E-9 -4.340460210882277E-9 -7.655344369400744E-11
peri -2.722061960133392E-14 -1.020334848602092E-14 1.078056829188691E-9 -4.340460210882277E-9 4.682692901679668E-9 7.739866082970875E-11
i -1.37923048475003E-15 3.119756768099239E-15 3.191632976207987E-12 -7.655344369400744E-11 7.739866082970875E-11 2.16029582523289E-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 16.9   n/a MPO417933  

173185 (1998 FB72)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

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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
1985-Feb-07 19:10 00:01 Psych 0.0359780457822379 0.0359742980578348 0.0359817942534613 4.33562838945979 4.3356283118952 2446104.298310071 1.36780486902117 332.455080711765 64.1336847007841 57.4677256476426 71231.3640941174 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 10:24:13 2020-Nov-12 10:24

Alternate Designations
 1998 FB72 = 2003 UJ286 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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