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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 ]

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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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456979.5 (2014-Nov-18.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1598905406611615 4.6482e-08  
q 2.309469361764857 1.3617e-07 au
tp 2457678.779534094655
(2016-Oct-17.27953409)
7.0196e-05 TDB
node 262.3802016219925 3.5221e-05 deg
peri 75.45565578375681 3.8254e-05 deg
i 7.481093903602078 4.7878e-06 deg
  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
 Jupiter MOID = 2.22168 au 
 T_jup = 3.315 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.16057665606938E-15 -6.299383888724103E-15 -2.612395570201625E-13 5.836362949234041E-15 8.793446144696173E-15 -1.193305959631385E-15
q -6.299383888724103E-15 1.854110714520893E-14 9.43285248894132E-13 -1.984338753029003E-14 -4.241880886169486E-15 4.01502774047936E-15
tp -2.612395570201625E-13 9.43285248894132E-13 4.927525927987629E-9 -7.578822550219978E-12 1.060704686870136E-9 8.659912879823192E-13
node 5.836362949234041E-15 -1.984338753029003E-14 -7.578822550219978E-12 1.240551561906548E-9 -1.231249158679553E-9 -1.028062415517446E-11
peri 8.793446144696173E-15 -4.241880886169486E-15 1.060704686870136E-9 -1.231249158679553E-9 1.463348991862154E-9 1.032206315980159E-11
i -1.193305959631385E-15 4.01502774047936E-15 8.659912879823192E-13 -1.028062415517446E-11 1.032206315980159E-11 2.292279970126684E-11

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 ]
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