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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1606375534696832 4.6531e-08  
a 2.749512348175272 1.8769e-08 au
q 2.307837411329713 1.3672e-07 au
i 7.476756857526857 4.7851e-06 deg
node 262.3274264119103 3.5262e-05 deg
peri 74.79114854199956 3.8247e-05 deg
M 12.14182445530957 1.6251e-05 deg
tp 2459340.335307250623
(2021-May-05.83530725)
7.4918e-05 TDB
period 1665.259571508119
4.56
1.7052e-05
4.669e-08
d
yr
n .2161825136209672 2.2136e-09 deg/d
Q 3.191187285020832 2.1784e-08 au
  Orbit Determination Parameters
   # obs. used (total)      896  
   data-arc span      8354 days (22.87 yr)  
   first obs. used      1998-08-24  
   last obs. used      2021-07-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55295  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:34:05  

Additional Information
 Earth MOID = 1.31135 au 
 Jupiter MOID = 2.22168 au 
 T_jup = 3.315 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-29 10:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin