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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1609337366102976 4.9482e-08  
a 2.748999594815973 1.9199e-08 au
q 2.306592818082044 1.4283e-07 au
i 7.482094179370428 4.829e-06 deg
node 262.3653022405691 4.0629e-05 deg
peri 75.08697010802852 4.3164e-05 deg
M 286.2819750746258 1.6202e-05 deg
tp 2459341.403634014377
(2021-May-06.90363401)
7.6506e-05 TDB
period 1664.79376474631
4.56
1.744e-05
4.775e-08
d
yr
n .216243001159281 2.2653e-09 deg/d
Q 3.191406371549902 2.2288e-08 au
  Orbit Determination Parameters
   # obs. used (total)      772  
   data-arc span      7918 days (21.68 yr)  
   first obs. used      1998-08-24  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56538  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:03:37  

Additional Information
 Earth MOID = 1.31101 au 
 Jupiter MOID = 2.22437 au 
 T_jup = 3.315 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456681.5 (2014-Jan-24.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1588442058764531 4.94e-08  
q 2.314442952597379 1.425e-07 au
tp 2456013.082795267305
(2012-Mar-26.58279527)
6.9586e-05 TDB
node 262.4145148725835 4.0588e-05 deg
peri 75.46377061081492 4.3216e-05 deg
i 7.48272697727473 4.8296e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      772  
   data-arc span      7918 days (21.68 yr)  
   first obs. used      1998-08-24  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56538  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:03:37  

Additional Information
 Jupiter MOID = 2.22437 au 
 T_jup = 3.315 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.440320157494844E-15 -6.99850425541093E-15 1.539360375284401E-13 6.009878273600479E-15 8.495137711561658E-16 -7.591999984555936E-16
q -6.99850425541093E-15 2.030520360531409E-14 -4.599403801563356E-13 -1.813880522875693E-14 8.672085958960113E-15 2.559579104420301E-15
tp 1.539360375284401E-13 -4.599403801563356E-13 4.842277243899182E-9 -3.949054297347693E-12 1.062611369178251E-9 3.013308175232327E-13
node 6.009878273600479E-15 -1.813880522875693E-14 -3.949054297347693E-12 1.647417740291366E-9 -1.634613319875355E-9 -5.048546790002661E-14
peri 8.495137711561658E-16 8.672085958960113E-15 1.062611369178251E-9 -1.634613319875355E-9 1.867597720435127E-9 1.647898737258211E-13
i -7.591999984555936E-16 2.559579104420301E-15 3.013308175232327E-13 -5.048546790002661E-14 1.647898737258211E-13 2.332459657901227E-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  

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

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