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100877 (1998 HN86)
Classification: Main-belt Asteroid          SPK-ID: 2100877
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1240026757903797 4.572e-08  
a 3.066186358986474 2.543e-08 au
q 2.685971046000189 1.4357e-07 au
i 7.696297133584162 5.026e-06 deg
node 222.3379898677257 4.1648e-05 deg
peri 349.7872366259862 4.7279e-05 deg
M 81.35641806161313 2.1982e-05 deg
tp 2458757.314476132261
(2019-Sep-30.81447613)
0.00011973 TDB
period 1961.084231505346
5.37
2.4397e-05
6.68e-08
d
yr
n .1835719211936454 2.2837e-09 deg/d
Q 3.446401671972758 2.8583e-08 au
  Orbit Determination Parameters
   # obs. used (total)      640  
   data-arc span      8133 days (22.27 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-07-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6134  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:34:10  

Additional Information
 Earth MOID = 1.67925 au 
 Jupiter MOID = 1.53137 au 
 T_jup = 3.207 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457087.5 (2015-Mar-06.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .121950040276817 4.5858e-08  
q 2.689234441342084 1.432e-07 au
tp 2456794.810590568812
(2014-May-17.31059057)
0.00012355 TDB
node 222.4854024988033 4.1591e-05 deg
peri 348.8010340474837 4.7391e-05 deg
i 7.703360730291124 5.0287e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      640  
   data-arc span      8133 days (22.27 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-07-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6134  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:34:10  

Additional Information
 Jupiter MOID = 1.53137 au 
 T_jup = 3.207 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.102933402044024E-15 -6.490376334289569E-15 -1.315878653792055E-12 4.525797939171319E-16 -2.661890738366352E-13 1.584515231624086E-16
q -6.490376334289569E-15 2.050575003688439E-14 3.516487723673836E-12 -1.400185025397924E-14 7.416615872565724E-13 3.254761549609848E-16
tp -1.315878653792055E-12 3.516487723673836E-12 1.526418658465752E-8 3.39042355477371E-11 2.848830262614838E-9 -6.673461782794818E-12
node 4.525797939171319E-16 -1.400185025397924E-14 3.39042355477371E-11 1.729787777441266E-9 -1.708640782240248E-9 -3.807128868048624E-11
peri -2.661890738366352E-13 7.416615872565724E-13 2.848830262614838E-9 -1.708640782240248E-9 2.245945064262543E-9 3.648926785568429E-11
i 1.584515231624086E-16 3.254761549609848E-16 -6.673461782794818E-12 -3.807128868048624E-11 3.648926785568429E-11 2.52875030144617E-11

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 14.68   n/a E2021B55  
rotation period rot_per 30.9637 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

100877 (1998 HN86)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ 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
1904-May-13 15:45 00:04 Jupiter 1.57427029392056 1.57426900291816 1.57427158493567 2.14411260046623 1.87646906379666 2416614.156092664 4.19241423066057 285.829454215214 47.7984504965706 -69.0678513055119 1628655.08673986 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:12 2021-Apr-13 15:34
1953-Apr-04 17:52 00:02 Jupiter 1.6720274008618 1.67202604128091 1.67202876044668 2.79700848214172 2.60961457520532 2434472.244361134 2.33706349973162 171.448812543078 34.1579067237743 73.6624064060292 2544509.26827178 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:12 2021-Apr-13 15:34
1962-Sep-13 10:02 00:02 Jupiter 1.81317724122158 1.81317594885323 1.81317853358993 2.20613742061372 1.98311519818639 2437920.918087630 2.14684909181453 87.0099158057789 18.2356251983576 -71.1558549229027 1521762.28451077 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:12 2021-Apr-13 15:34
2011-Sep-07 02:38 < 00:01 Jupiter 1.52767795889121 1.5276775026876 1.52767841509482 2.42794395825749 2.18769512137988 2455811.609688692 0.311299417579297 76.3445244335187 27.0205825926929 -77.8610415978684 2034559.76732362 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:12 2021-Apr-13 15:34
2060-Aug-01 06:12 00:02 Jupiter 1.83519267176722 1.83519140960151 1.83519393393303 2.98417257650329 2.82527832093995 2473672.758436732 1.71565100860099 89.253637556287 47.6879052157705 68.9445015473674 2005991.05390463 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:12 2021-Apr-13 15:34
2070-Jan-29 11:13 00:02 Jupiter 1.66037270454624 1.66037143427918 1.66037397481415 2.16139293356503 1.91084783219341 2477140.967422752 2.21907291972351 113.950334152148 49.5119387341054 -59.3141930371057 1652757.52114839 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:12 2021-Apr-13 15:34
2118-Dec-27 19:58 00:04 Jupiter 1.5694356422244 1.56943438157183 1.56943690289776 2.61160301028037 2.39605357012369 2495004.331631765 3.74047045218166 330.55309767802 27.8324345673428 82.5573535092497 2344162.43626544 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:12 2021-Apr-13 15:34
2128-Jun-02 21:54 00:04 Jupiter 1.95768960868655 1.95768685817559 1.95769235919862 2.77643188492979 2.61595972873678 2498449.412459499 4.35607373595995 168.632694712375 14.4506600689662 -60.0500380211346 1471671.70074978 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:12 2021-Apr-13 15:34
2177-Jun-03 22:18 00:06 Jupiter 1.55664259723024 1.55664086675692 1.55664432774692 2.37634887746951 2.13512658645084 2516347.429006540 5.99943134909242 468.068067831545 32.2582783904084 -76.5382227570125 1845785.17423891 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:12 2021-Apr-13 15:34

Alternate Designations
 1998 HN86 = 2001 XS209 = 2003 EH34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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