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JPL Small-Body Database Browser
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48878 (1998 HQ118)
Classification: Main-belt Asteroid          SPK-ID: 2048878
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1472896595860783 3.5027e-08  
a 3.04879995554914 1.7985e-08 au
q 2.599743247950256 1.0705e-07 au
i 16.06770453063004 4.2294e-06 deg
node 132.32813255798 1.6224e-05 deg
peri 343.8357948176697 2.3391e-05 deg
M 138.0260188197368 1.6027e-05 deg
tp 2458254.995478573792
(2018-May-16.49547857)
8.553e-05 TDB
period 1944.427797080372
5.32
1.7205e-05
4.71e-08
d
yr
n .1851444422572815 1.6382e-09 deg/d
Q 3.497856663148023 2.0634e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1390  
   data-arc span      9462 days (25.91 yr)  
   first obs. used      1993-06-15  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47428  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:39:27  

Additional Information
 Earth MOID = 1.61917 au 
 Jupiter MOID = 1.59746 au 
 T_jup = 3.162 
[ 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 13.3   n/a MPO474367  

48878 (1998 HQ118)          Discovered 1998-Apr-23 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
1915-Aug-31 13:16 00:03 Jupiter 1.85873416699266 1.85873204549832 1.85873628849714 3.76432633930883 3.64125742482695 2420741.053024530 2.90450479678112 249.324422688339 24.723007313224 64.6647240268227 3293125.25290698 T 23 CATAB v2.0e-lin.ifort 2019-May-30 04:39:34 2019-May-30 04:39
1925-Mar-14 15:51 00:03 Jupiter 1.90755054330715 1.90754859467667 1.90755249193818 3.5197190730816 3.3912164311156 2424224.160143366 2.5836539019249 125.323871720056 84.4828526419188 -49.6378124550944 3570738.86032207 T 23 CATAB v2.0e-lin.ifort 2019-May-30 04:39:34 2019-May-30 04:39
1973-May-23 15:25 00:01 Jupiter 1.65229307074654 1.65229252008385 1.65229362141101 3.88911673950781 3.75499133318395 2441826.142104059 1.08242616753886 146.395864419195 22.0173155103528 -83.3879055629095 3580630.24376496 T 23 CATAB v2.0e-lin.ifort 2019-May-30 04:39:34 2019-May-30 04:39
2021-Jul-03 11:29 < 00:01 Jupiter 1.60255801555928 1.60255763232464 1.60255839879447 3.94812071279962 3.81189835226221 2459398.978814825 0.332348253453799 82.7976274258582 14.1404230952154 81.5424094681662 3462172.82761049 T 23 CATAB v2.0e-lin.ifort 2019-May-30 04:39:34 2019-May-30 04:39
2069-Sep-01 03:16 00:02 Jupiter 1.77102561916271 1.77102438116774 1.77102685716333 3.72119344837894 3.59036869291246 2476990.636396467 1.70145954305241 182.717015373323 22.47651313713 70.7041737968365 3127058.31231219 T 23 CATAB v2.0e-lin.ifort 2019-May-30 04:39:34 2019-May-30 04:39
2079-Mar-18 20:29 00:02 Jupiter 1.99242637344206 1.99242458072505 1.99242816615976 3.52699651964747 3.4043299230907 2480476.353803949 2.02641319661663 137.521975285287 74.5632918068776 61.1006662030109 3287539.75453288 T 23 CATAB v2.0e-lin.ifort 2019-May-30 04:39:34 2019-May-30 04:39
2127-Jun-04 10:13 00:03 Jupiter 1.70388775299632 1.70388587094294 1.70388963506528 3.88226704489086 3.75203598507629 2498084.925874283 2.97600011642732 292.83301831108 32.8725904976748 -71.9898314990852 3781726.98345332 T 23 CATAB v2.0e-lin.ifort 2019-May-30 04:39:34 2019-May-30 04:39
2175-Jul-19 15:38 00:04 Jupiter 1.59692829491436 1.59692795284549 1.59692863698323 3.9423395153136 3.80542062596538 2515662.151380985 3.93620686121282 585.352120781506 16.3277665004204 89.9018726477919 3493805.24169985 T 23 CATAB v2.0e-lin.ifort 2019-May-30 04:39:34 2019-May-30 04:39

Alternate Designations
 1998 HQ118 = 2000 QC191 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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