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74138 (1998 QD75)
Classification: Main-belt Asteroid          SPK-ID: 2074138
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2564431475845468 4.0759e-08  
a 2.68597011894897 1.768e-08 au
q 1.997171487327656 1.1598e-07 au
i 10.14407129400103 6.8226e-06 deg
node 200.0580933008384 2.3555e-05 deg
peri 92.40039066612535 2.7723e-05 deg
M 8.942411786693501 1.56e-05 deg
tp 2458960.560524602361
(2020-Apr-21.06052460)
6.943e-05 TDB
period 1607.867260658367
4.40
1.5875e-05
4.346e-08
d
yr
n .2238990797365899 2.2106e-09 deg/d
Q 3.374768750570283 2.2214e-08 au
  Orbit Determination Parameters
   # obs. used (total)      673  
   data-arc span      7922 days (21.69 yr)  
   first obs. used      1998-08-19  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59097  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:03:15  

Additional Information
 Earth MOID = 1.01277 au 
 Jupiter MOID = 1.96202 au 
 T_jup = 3.304 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456660.5 (2014-Jan-03.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .25440056522711 4.0794e-08  
q 2.004506911187966 1.1576e-07 au
tp 2457353.651156038755
(2015-Nov-27.15115604)
6.2025e-05 TDB
node 200.1575910946702 2.356e-05 deg
peri 92.26927731565085 2.782e-05 deg
i 10.13647998348397 6.8196e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      673  
   data-arc span      7922 days (21.69 yr)  
   first obs. used      1998-08-19  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59097  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:03:15  

Additional Information
 Jupiter MOID = 1.96202 au 
 T_jup = 3.304 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.664156483398896E-15 -4.698478176250623E-15 -5.816525084171784E-13 6.374840096818725E-15 -4.162174934985193E-14 -5.31097219323901E-15
q -4.698478176250623E-15 1.339933543683845E-14 1.881629225724917E-12 -2.11626218405975E-14 1.566179875622384E-13 1.803701544488411E-14
tp -5.816525084171784E-13 1.881629225724917E-12 3.847098406950751E-9 -2.487123225053321E-11 9.112216946635305E-10 1.316422202591639E-11
node 6.374840096818725E-15 -2.11626218405975E-14 -2.487123225053321E-11 5.550818477904858E-10 -5.509741357570558E-10 1.856665835526868E-11
peri -4.162174934985193E-14 1.566179875622384E-13 9.112216946635305E-10 -5.509741357570558E-10 7.739697026529991E-10 -1.537641871858185E-11
i -5.31097219323901E-15 1.803701544488411E-14 1.316422202591639E-11 1.856665835526868E-11 -1.537641871858185E-11 4.650720683843943E-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 15.1   n/a MPO436301  
diameter diameter 3.663 km 0.985 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.100   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74138 (1998 QD75)          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
1978-Feb-17 17:40 00:01 Jupiter 1.952798035878 1.95279744125656 1.95279863050287 1.55413641323489 1.24412367190421 2443557.236163753 1.08042622241834 327.378178750036 115.864812461532 -58.2617751246208 1513176.26518824 T 16 CATAB v2.0f-lin.ifort 2020-May-20 14:03:30 2020-May-20 14:03
2013-Feb-04 13:31 < 00:01 Jupiter 1.97002592406081 1.97002531339692 1.97002653472448 2.45048566598434 2.26825262686203 2456328.063399856 0.282599047806133 127.662160801643 19.1149973867195 -83.3946707012971 1626685.67280166 T 16 CATAB v2.0f-lin.ifort 2020-May-20 14:03:30 2020-May-20 14:03
2132-May-28 09:54 00:03 Jupiter 1.96171573382757 1.96171500381616 1.961716463842 1.38438992210946 1.02614945247548 2499904.912597113 3.40482476853465 848.161498485265 130.607254423062 -42.4178669865479 2106123.19608193 T 16 CATAB v2.0f-lin.ifort 2020-May-20 14:03:30 2020-May-20 14:03
2167-May-13 07:49 00:04 Jupiter 1.98632195797913 1.98632099612548 1.98632291983662 2.3251736282683 2.1339112425501 2512672.825903830 4.3245824898479 285.726986572594 51.9506264103877 77.0966716929477 707300.588351434 T 16 CATAB v2.0f-lin.ifort 2020-May-20 14:03:30 2020-May-20 14:03

Alternate Designations
 1998 QD75 = 2002 JC74 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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