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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


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 
[ 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 1.952798035878 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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