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74140 (1998 QD77)
Classification: Main-belt Asteroid          SPK-ID: 2074140
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .161011674443888 4.668e-08  
a 2.750478698245289 1.8502e-08 au
q 2.30761951751857 1.3722e-07 au
i 7.479175960680468 4.7945e-06 deg
node 262.3597572341832 3.5237e-05 deg
peri 74.8843703288584 3.8223e-05 deg
M 329.698336735698 1.6135e-05 deg
tp 2459340.740942714099
(2021-May-06.24094271)
7.5286e-05 TDB
period 1666.137562704464
4.56
1.6812e-05
4.603e-08
d
yr
n .2160685936494044 2.1802e-09 deg/d
Q 3.193337878972009 2.1481e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54353  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:11:19  

Additional Information
 Earth MOID = 1.3101 au 
 Jupiter MOID = 2.22127 au 
 T_jup = 3.315 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456971.5 (2014-Nov-10.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1598745795412975 4.6653e-08  
q 2.309543611738373 1.3676e-07 au
tp 2457678.792798580039
(2016-Oct-17.29279858)
7.0416e-05 TDB
node 262.3807667042376 3.5221e-05 deg
peri 75.45438400434868 3.8264e-05 deg
i 7.481086117922778 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54353  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:11:19  

Additional Information
 Jupiter MOID = 2.22127 au 
 T_jup = 3.315 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.176503199778853E-15 -6.350044070654898E-15 -2.827582743862653E-13 5.94508875959774E-15 5.492156616059467E-15 -1.217425447760545E-15
q -6.350044070654898E-15 1.870221680880094E-14 1.01125157375799E-12 -2.017945845101954E-14 6.129790754851765E-15 4.088509701655707E-15
tp -2.827582743862653E-13 1.01125157375799E-12 4.958365715878587E-9 -7.738081003589135E-12 1.065582845253748E-9 9.155179132485422E-13
node 5.94508875959774E-15 -2.017945845101954E-14 -7.738081003589135E-12 1.240547952763167E-9 -1.23127149888783E-9 -1.02966924610798E-11
peri 5.492156616059467E-15 6.129790754851765E-15 1.065582845253748E-9 -1.23127149888783E-9 1.464132451379503E-9 1.034655415898979E-11
i -1.217425447760545E-15 4.088509701655707E-15 9.155179132485422E-13 -1.02966924610798E-11 1.034655415898979E-11 2.300084861263996E-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

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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
1993-Dec-04 20:19 < 00:01 Eunom 0.0192832416792209 0.0192810910641345 0.0192853928102699 3.56467008794819 3.56466988372996 2449326.346246287 0.981677854462999 205.523318877921 47.6792148462019 -61.3332223139936 53440.278329245 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 13:11:22 2021-Apr-13 13:11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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