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JPL Small-Body Database Browser
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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2564431581927643 4.0766e-08  
a 2.685970123161319 1.7694e-08 au
q 1.997171461966422 1.1602e-07 au
i 10.14407188638441 6.832e-06 deg
node 200.0580962979195 2.3526e-05 deg
peri 92.40037997979115 2.7706e-05 deg
M 8.942413668967413 1.5642e-05 deg
tp 2458960.560516101611
(2020-Apr-21.06051610)
6.9615e-05 TDB
period 1607.867264440742
4.40
1.5888e-05
4.35e-08
d
yr
n .2238990792098857 2.2125e-09 deg/d
Q 3.374768784356216 2.2232e-08 au
  Orbit Determination Parameters
   # obs. used (total)      672  
   data-arc span      7560 days (20.70 yr)  
   first obs. used      1998-08-19  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59877  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:14:42  

Additional Information
 Earth MOID = 1.01277 au 
 Jupiter MOID = 1.96202 au 
 T_jup = 3.304 
[ show covariance matrix ]

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 1.9527979861859 1.95279739085139 1.95279858152396 1.55413626255206 1.24412347480234 2443557.236162100 1.08049230188045 327.526324812005 115.959182434914 -58.2796596298716 1511630.27721075 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 11:14:46 2019-Jul-13 11:14
2013-Feb-04 13:31 < 00:01 Jupiter 1.97002582193146 1.97002521062503 1.97002643323765 2.45048539259336 2.26825232167987 2456328.063438674 0.282399081842226 127.793028849532 19.0946536587431 -83.3979526043357 1626139.28132281 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 11:14:46 2019-Jul-13 11:14
2132-May-28 09:54 00:03 Jupiter 1.96171571083033 1.96171497959042 1.96171644207326 1.38438901712197 1.02614822661348 2499904.912819949 3.40867464068776 848.739744369721 130.753605364122 -42.4187316751144 2104792.98497154 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 11:14:46 2019-Jul-13 11:14
2167-May-13 07:50 00:04 Jupiter 1.98632178606452 1.98632082382537 1.98632274830762 2.32517208750993 2.13390954639803 2512672.826179987 4.32993021073678 286.08306601226 51.9811961252427 77.0941118701061 706627.120547969 T 15 CATAB v2.0e-lin.ifort 2019-Jul-13 11:14:46 2019-Jul-13 11:14

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