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JPL Small-Body Database Browser
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74038 (1998 HE74)
Classification: Main-belt Asteroid          SPK-ID: 2074038
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1679500258724653 3.503e-08  
a 2.34699011613238 1.0259e-08 au
q 1.952813065405526 8.4252e-08 au
i 1.852785881097446 4.2507e-06 deg
node 126.4126752783566 0.00013734 deg
peri 135.0750332120261 0.00013815 deg
M 266.0593851683713 1.7095e-05 deg
tp 2458943.201665732071
(2020-Apr-03.70166573)
6.3265e-05 TDB
period 1313.304153742961
3.60
8.6107e-06
2.357e-08
d
yr
n .2741177654650584 1.7973e-09 deg/d
Q 2.741167166859233 1.1982e-08 au
  Orbit Determination Parameters
   # obs. used (total)      826  
   data-arc span      7653 days (20.95 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55968  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:43:38  

Additional Information
 Earth MOID = .937472 au 
 Jupiter MOID = 2.32371 au 
 T_jup = 3.540 
[ 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 16.0   n/a MPO426448  

74038 (1998 HE74)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20040415/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
1923-Jul-24 11:28 < 00:01 Hebe 0.0383345389770549 0.0383208977604146 0.0383481805704596 8.119801278571 8.11980125859899 2423624.977739772 0.601408059240537 706.108287916773 31.5597059291617 15.6012777303452 49481.4208916009 T 18 CATAB v2.0e-lin.ifort 2019-Jul-13 07:43:42 2019-Jul-13 07:43
1957-Aug-24 06:35 00:01 David 0.0124879109741358 0.0124869388540656 0.0124888849169538 5.79635245404793 5.79635224534024 2436074.774495618 1.12105035570643 342.686559027931 34.5882975219743 -84.2762495354261 53718.0626501601 T 18 CATAB v2.0e-lin.ifort 2019-Jul-13 07:43:42 2019-Jul-13 07:43
1999-Feb-08 08:19 < 00:01 Hebe 0.0340330853105505 0.0340314703994683 0.0340347002224187 8.08025952780889 8.08025950520251 2451217.846265848 0.202181836505357 81.0056756999937 31.7148296749159 6.84198415514836 65256.6142603776 T 18 CATAB v2.0e-lin.ifort 2019-Jul-13 07:43:42 2019-Jul-13 07:43
2074-Aug-27 11:20 < 00:01 Hebe 0.017637336625754 0.0176262816827727 0.0176483922641189 7.94889832850368 7.94889828416144 2478811.972091320 0.64914118552357 578.277826972606 30.6928815114842 -17.6292558413995 26388.4818467219 T 18 CATAB v2.0e-lin.ifort 2019-Jul-13 07:43:42 2019-Jul-13 07:43
2150-Mar-15 21:55 00:01 Hebe 0.0216541191662278 0.021637160218253 0.0216710921954434 7.72315238855104 7.72315235137848 2506405.413432550 1.37049551515652 1214.25522977753 30.271500161414 45.8618824079391 76804.9628240937 T 18 CATAB v2.0e-lin.ifort 2019-Jul-13 07:43:42 2019-Jul-13 07:43
2197-Apr-01 04:10 < 00:01 Juno 0.0165384792111324 0.0165104816264817 0.0165664839272297 8.75592791355789 8.75592782954456 2523588.673851236 0.764087962210835 1497.37935992233 32.5010242246307 -21.2083918430676 27572.7103387135 T 18 CATAB v2.0e-lin.ifort 2019-Jul-13 07:43:42 2019-Jul-13 07:43
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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