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JPL Small-Body Database Browser
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48975 (1998 QH40)
Classification: Main-belt Asteroid          SPK-ID: 2048975
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2213494389444837 5.0373e-08  
a 2.399206987134421 9.4588e-09 au
q 1.868143866620532 1.222e-07 au
i 2.944143122824125 4.3233e-06 deg
node 258.9044207134248 9.7513e-05 deg
peri 142.9547429570528 9.7973e-05 deg
M 269.1890130856473 1.2057e-05 deg
tp 2459342.901688706325
(2021-May-08.40168871)
4.6897e-05 TDB
period 1357.375490815142
3.72
8.0271e-06
2.198e-08
d
yr
n .2652176957930851 1.5684e-09 deg/d
Q 2.93027010764831 1.1553e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1102  
   data-arc span      11549 days (31.62 yr)  
   first obs. used      1987-09-26  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53847  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:39:40  

Additional Information
 Earth MOID = .877776 au 
 Jupiter MOID = 2.48389 au 
 T_jup = 3.491 
[ 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 14.8   n/a MPO474369  

48975 (1998 QH40)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
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
2045-Dec-28 17:24 00:06 Iris 0.0316044017480685 0.0316021622232454 0.0316066414475774 0.77963590161296 0.779635668302774 2468343.224925894 5.74833629080339 162.000308805008 23.4292740814891 -47.6587093209748 148356.25470235 T 22 CATAB v2.0e-lin.ifort 2019-May-30 04:39:47 2019-May-30 04:39
2047-Aug-25 17:13 00:07 Iris 0.0459121772615434 0.0459100821419035 0.0459142727276266 1.11713894621719 1.11713883413464 2468948.217612841 7.48842742605145 226.052990053818 18.4405772102637 -63.0084388419737 329901.647189112 T 22 CATAB v2.0e-lin.ifort 2019-May-30 04:39:47 2019-May-30 04:39
2124-Aug-09 17:57 00:02 Thisb 0.0360033468776056 0.0359950171083171 0.036011678333438 4.29436146007105 4.29436141597158 2497056.247671009 1.68505514020279 569.421816994509 34.5560419313075 -43.2859510482166 107033.411900385 T 22 CATAB v2.0e-lin.ifort 2019-May-30 04:39:47 2019-May-30 04:39

Alternate Designations
 1998 QH40 = 1987 SY26 = 1987 UD2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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