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91165 (1998 QF84)
Classification: Main-belt Asteroid          SPK-ID: 2091165
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1417289411407556 6.4145e-08  
a 3.13373180742186 2.5844e-08 au
q 2.689591316536854 2.0984e-07 au
i 14.14245442253895 6.4597e-06 deg
node 299.5170334277407 1.9161e-05 deg
peri 1.387433276330948 2.8933e-05 deg
M 72.16813998508141 1.8804e-05 deg
tp 2458990.305370674598
(2020-May-20.80537067)
0.00010813 TDB
period 2026.24131074146
5.55
2.5066e-05
6.863e-08
d
yr
n .1776688680126977 2.1979e-09 deg/d
Q 3.577872298306866 2.9507e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1063  
   data-arc span      8189 days (22.42 yr)  
   first obs. used      1998-08-19  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49315  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:44:03  

Additional Information
 Earth MOID = 1.67357 au 
 Jupiter MOID = 1.66585 au 
 T_jup = 3.150 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458113.5 (2017-Dec-26.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1424010738075399 6.4079e-08  
q 2.687578919201962 2.1028e-07 au
tp 2458994.852856605913
(2020-May-25.35285661)
0.00010603 TDB
node 299.5631707318832 1.9182e-05 deg
peri 2.370213119799038 2.873e-05 deg
i 14.13378003664689 6.4522e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1063  
   data-arc span      8189 days (22.42 yr)  
   first obs. used      1998-08-19  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49315  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:44:03  

Additional Information
 Jupiter MOID = 1.66585 au 
 T_jup = 3.150 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.106153129235573E-15 -1.340731752822197E-14 3.629132743254961E-12 2.643449571620449E-14 6.381664079028227E-13 -1.336650663771174E-14
q -1.340731752822197E-14 4.421671494692077E-14 -1.255912761682498E-11 -8.621666651154351E-14 -2.26788822443063E-12 4.682202931825432E-14
tp 3.629132743254961E-12 -1.255912761682498E-11 1.124278583280089E-8 2.85171616739163E-11 2.284155508884907E-9 -2.094428477896485E-11
node 2.643449571620449E-14 -8.621666651154351E-14 2.85171616739163E-11 3.679309153736885E-10 -3.51071133071829E-10 7.055802603512216E-11
peri 6.381664079028227E-13 -2.26788822443063E-12 2.284155508884907E-9 -3.51071133071829E-10 8.254271197996591E-10 -7.281465845418173E-11
i -1.336650663771174E-14 4.682202931825432E-14 -2.094428477896485E-11 7.055802603512216E-11 -7.281465845418173E-11 4.163128684949106E-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 14.08   n/a E2021B10  
rotation period rot_per 53.5573 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

91165 (1998 QF84)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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