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 ]  
74140 (1998 QD77)
Classification: Main-belt Asteroid          SPK-ID: 2074140
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .160933740604999 4.6683e-08  
a 2.74899959615996 1.8309e-08 au
q 2.306592808228306 1.3703e-07 au
i 7.482093684664251 4.7963e-06 deg
node 262.3652810010586 3.522e-05 deg
peri 75.0869910312823 3.821e-05 deg
M 286.2819745137251 1.5995e-05 deg
tp 2459341.403636858224
(2021-May-06.90363686)		 7.5389e-05 TDB
period 1664.793765967187
4.56		 1.6632e-05
4.554e-08		 d
yr
n .2162430010006991 2.1603e-09 deg/d
Q 3.191406384091614 2.1255e-08 au
   Orbit Determination Parameters
   # obs. used (total)      888  
   data-arc span      8058 days (22.06 yr)  
   first obs. used      1998-08-24  
   last obs. used      2020-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54353  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:44:52  

Additional Information
 Earth MOID = 1.31101 au 
 Jupiter MOID = 2.22437 au 
 T_jup = 3.315 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456971.5 (2014-Nov-10.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1598745812072322 4.6653e-08  
q 2.309543605775239 1.3676e-07 au
tp 2457678.792798258077
(2016-Oct-17.29279826)		 7.0416e-05 TDB
node 262.3807667033392 3.5221e-05 deg
peri 75.45438390870493 3.8264e-05 deg
i 7.481086122012675 4.7959e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      888  
   data-arc span      8058 days (22.06 yr)  
   first obs. used      1998-08-24  
   last obs. used      2020-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54353  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:44:52  

Additional Information
 Jupiter MOID = 2.22437 au 
 T_jup = 3.315 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.17650291866455E-15 -6.350043413091975E-15 -2.827581686015802E-13 5.94509008799844E-15 5.492147374213937E-15 -1.217424124531193E-15
q -6.350043413091975E-15 1.870221572580545E-14 1.011251351970319E-12 -2.017946346550599E-14 6.129834987683549E-15 4.088505312252591E-15
tp -2.827581686015802E-13 1.011251351970319E-12 4.958365403243163E-9 -7.73808588544649E-12 1.065582755574612E-9 9.155170168067427E-13
node 5.94509008799844E-15 -2.017946346550599E-14 -7.73808588544649E-12 1.24054792247665E-9 -1.231271470859766E-9 -1.029669208766575E-11
peri 5.492147374213937E-15 6.129834987683549E-15 1.065582755574612E-9 -1.231271470859766E-9 1.464132407043856E-9 1.034655356942326E-11
i -1.217424124531193E-15 4.088505312252591E-15 9.155170168067427E-13 -1.029669208766575E-11 1.034655356942326E-11 2.300084889149209E-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 MPO468688  
rotation period rot_per 85.0117 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.]

74140 (1998 QD77)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ 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-Jan-22 12:44 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin