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441435 (2008 HE8)
Classification: Outer Main-belt Asteroid          SPK-ID: 2441435
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07156541745416414 1.2198e-07  
a 3.207195944561809 1.4677e-07 au
q 2.977671627931941 3.4808e-07 au
i 9.984926234383005 1.2992e-05 deg
node 124.3280453676754 6.5288e-05 deg
peri 64.35316774458802 0.00013451 deg
M 61.50041785010219 0.00014233 deg
tp 2458642.104759381089
(2019-Jun-07.60475938)
0.00081114 TDB
period 2097.909105874368
5.74
0.00014401
3.943e-07
d
yr
n .171599426777815 1.1779e-08 deg/d
Q 3.436720261191678 1.5727e-07 au
  Orbit Determination Parameters
   # obs. used (total)      46  
   data-arc span      2712 days (7.43 yr)  
   first obs. used      2008-04-03  
   last obs. used      2015-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66059  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:38:26  

Additional Information
 Earth MOID = 1.99735 au 
 Jupiter MOID = 1.60549 au 
 T_jup = 3.165 
[ 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 16.8   n/a MPO349179  

441435 (2008 HE8)          Discovered 2008-Apr-03 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

[ 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
1977-Aug-08 12:53 01:13 Jupiter 1.99199145503039 1.99198666010725 1.99199625096457 3.79836667938686 3.68472001248187 2443364.036637382 73.4788582829221 2351.98501707913 50.8872794183208 -82.4737703507538 1497282.55539733 T 9 CATAB v2.0e-lin.ifort 2017-Nov-26 19:27:54 2018-Dec-18 03:18
1988-Jul-21 15:47 01:32 Jupiter 1.79997783134709 1.79997400612315 1.79998165714698 2.52659813969517 2.33292743987804 2447364.157635869 91.9607499828731 1811.24934240845 63.4084550885964 -79.873076810326 1117313.97381242 T 9 CATAB v2.0e-lin.ifort 2017-Nov-26 19:27:54 2018-Dec-18 03:18
1999-Jul-02 02:38 01:11 Jupiter 1.65218557632012 1.65218310517923 1.65218804747332 2.03493491962282 1.7651131181466 2451361.609457735 71.415715083005 324.592601098904 71.8764526363878 84.6490208131351 747417.259386498 T 9 CATAB v2.0e-lin.ifort 2017-Nov-26 19:27:54 2018-Dec-18 03:18
2010-Jul-04 13:09 00:14 Jupiter 1.59534149188587 1.59534007313305 1.59534291064269 2.5343315096737 2.31537607103936 2455382.047877345 13.7542788593706 403.782451496805 56.9355603266153 89.751075891691 908795.845640888 T 9 CATAB v2.0e-lin.ifort 2017-Nov-26 19:27:54 2018-Dec-18 03:18
2021-Jul-22 04:24 00:14 Jupiter 1.68151633842035 1.68151498642722 1.68151769043901 3.18093693093996 3.01842822146415 2459417.682994537 14.3373968443692 587.907142420581 48.3427326025948 -84.6773798501232 1090466.38331552 T 9 CATAB v2.0e-lin.ifort 2017-Nov-26 19:27:54 2018-Dec-18 03:18
2032-Aug-02 17:40 00:29 Jupiter 1.90010539960816 1.90010324728367 1.9001075521936 3.81126296729074 3.69244799762678 2463447.236431127 29.2718640251749 1337.26904540192 51.9361915191727 -85.0829844493176 1264777.74970306 T 9 CATAB v2.0e-lin.ifort 2017-Nov-26 19:27:54 2018-Dec-18 03:18
2131-Nov-07 21:08 02:45 Jupiter 1.93889943892196 1.93889182869678 1.93890705478998 3.64461345791071 3.52271096049058 2499702.380431210 164.660020726517 5391.03175898689 51.4615219744578 -83.7690394262724 1288861.17741685 T 9 CATAB v2.0e-lin.ifort 2017-Nov-26 19:27:54 2018-Dec-18 03:18
2142-Oct-28 00:00 05:05 Jupiter 1.76519680599226 1.76519036662015 1.7652032544107 2.44409695925345 2.23917799018389 2503709.500281766 304.556999232681 6810.68419255407 57.8869858640753 -81.4538922237149 939387.724847933 T 9 CATAB v2.0e-lin.ifort 2017-Nov-26 19:27:54 2018-Dec-18 03:18
2153-Oct-11 09:26 08:02 Jupiter 1.64644170128645 1.64643778339435 1.64644561922974 1.90756341107355 1.61551394675858 2507710.892737671 481.783769458536 662.950026971835 86.5967699117325 86.9857174780653 795042.737381723 T 9 CATAB v2.0e-lin.ifort 2017-Nov-26 19:27:54 2018-Dec-18 03:18
2164-Oct-09 14:17 05:14 Jupiter 1.62178331534832 1.62178061133446 1.6217860284919 2.47681687909045 2.25611721851311 2511727.095082289 314.330572540784 7326.84159075298 64.1606401337644 -83.8921551702317 944206.747213197 T 9 CATAB v2.0e-lin.ifort 2017-Nov-26 19:27:54 2018-Dec-18 03:18
2175-Oct-23 01:33 04:03 Jupiter 1.72312476837957 1.72311387852658 1.72313567703639 3.25960738246249 3.10514354775093 2515757.564259093 243.486245485752 9271.17804706294 49.0013394765566 -84.7126600087303 1189578.44550881 T 9 CATAB v2.0e-lin.ifort 2017-Nov-26 19:27:54 2018-Dec-18 03:18
2186-Nov-01 02:27 03:51 Jupiter 1.93783916400702 1.93782149376728 1.93785685573427 4.004786489562 3.89411376743747 2519784.601900192 230.714931398932 10379.8405256464 50.499455224935 -84.2120358997868 1457339.45568787 T 9 CATAB v2.0e-lin.ifort 2017-Nov-26 19:27:54 2018-Dec-18 03:18

Alternate Designations
 2008 HE8 = 2011 XN2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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