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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1608172637905827 5.0159e-08  
a 2.748125463746447 1.9629e-08 au
q 2.306179446113517 1.4407e-07 au
i 7.482584239529186 4.8848e-06 deg
node 262.3637613151034 4.135e-05 deg
peri 75.23529677095227 4.3867e-05 deg
M 199.5777738934195 1.5867e-05 deg
tp 2459342.007074795917
(2021-May-07.50707480)
7.6629e-05 TDB
period 1663.999767396197
4.56
1.7828e-05
4.881e-08
d
yr
n .2163461840883085 2.318e-09 deg/d
Q 3.190071481379377 2.2786e-08 au
  Orbit Determination Parameters
   # obs. used (total)      761  
   data-arc span      7531 days (20.62 yr)  
   first obs. used      1998-08-24  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56513  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:18:14  

Additional Information
 Earth MOID = 1.30976 au 
 Jupiter MOID = 2.22368 au 
 T_jup = 3.316 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456545.5 (2013-Sep-10.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .158161090086632 5.0076e-08  
q 2.317536845671397 1.4387e-07 au
tp 2456012.759335101509
(2012-Mar-26.25933510)
7.012e-05 TDB
node 262.4285223418188 4.1267e-05 deg
peri 75.52198697917518 4.3896e-05 deg
i 7.485100306901532 4.8864e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      761  
   data-arc span      7531 days (20.62 yr)  
   first obs. used      1998-08-24  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56513  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:18:14  

Additional Information
 Jupiter MOID = 2.22368 au 
 T_jup = 3.316 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.507560806354166E-15 -7.160856774967031E-15 1.386990709984067E-13 5.238730084919035E-15 -5.350948498853841E-15 -6.368946460477229E-16
q -7.160856774967031E-15 2.069735841630371E-14 -4.295953364456293E-13 -1.421083473794866E-14 2.048005428949385E-14 2.212633440247857E-15
tp 1.386990709984067E-13 -4.295953364456293E-13 4.916830640176462E-9 -6.856561252962183E-12 1.081780998964827E-9 1.181803348980242E-13
node 5.238730084919035E-15 -1.421083473794866E-14 -6.856561252962183E-12 1.702968703201546E-9 -1.690158690933858E-9 5.341309020349237E-12
peri -5.350948498853841E-15 2.048005428949385E-14 1.081780998964827E-9 -1.690158690933858E-9 1.926865372453917E-9 -5.239206398471795E-12
i -6.368946460477229E-16 2.212633440247857E-15 1.181803348980242E-13 5.341309020349237E-12 -5.239206398471795E-12 2.38770358147582E-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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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