Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1419772192048104 6.4115e-08  
a 3.134772027557499 2.6119e-08 au
q 2.68970581224386 2.101e-07 au
i 14.1426820920642 6.4597e-06 deg
node 299.5193479514939 1.9158e-05 deg
peri 1.465027655004328 2.887e-05 deg
M 37.25931898183923 1.8916e-05 deg
tp 2458990.683430052467
(2020-May-21.18343005)
0.00010775 TDB
period 2027.250289194178
5.55
2.5337e-05
6.937e-08
d
yr
n .1775804408162636 2.2194e-09 deg/d
Q 3.579838242871138 2.9827e-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 = 1.67218 au 
 Jupiter MOID = 1.66491 au 
 T_jup = 3.150 
[ show covariance matrix ]

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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-13 07:05 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin