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18673 (1998 FH66)
Classification: Outer Main-belt Asteroid          SPK-ID: 2018673
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09319899254649162 3.2549e-08  
a 3.250831309251827 1.8129e-08 au
q 2.947857106290964 1.0741e-07 au
i .2170998651990091 3.5469e-06 deg
node 250.1016541428854 0.0011645 deg
peri 39.70571440365882 0.0011648 deg
M 231.3720621514085 2.3132e-05 deg
tp 2459965.432096042777
(2023-Jan-20.93209604)
0.00013778 TDB
period 2140.868921490024
5.86
1.7909e-05
4.903e-08
d
yr
n .1681560213174768 1.4067e-09 deg/d
Q 3.553805512212689 1.9819e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1815  
   data-arc span      11029 days (30.20 yr)  
   first obs. used      1991-01-12  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52787  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:46:05  

Additional Information
 Earth MOID = 1.92961 au 
 Jupiter MOID = 1.58871 au 
 T_jup = 3.175 
[ 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 13.67   n/a MPCxxxxx  
diameter diameter 9.908 km 0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.072   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18673 (1998 FH66)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20001111/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
1979-Dec-02 13:21 < 00:01 Jupiter 1.97874454299899 1.97874392413501 1.97874516186297 2.99124882862036 2.84454713805483 2444210.056528973 0.960067861626197 50.5472684895209 18.7362916164539 -75.7951518664824 2955488.3952322 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:46:17 2021-May-04 02:46
1991-Apr-29 20:31 < 00:01 Jupiter 1.8515363416424 1.85153582361939 1.85153685966531 2.56683240064344 2.38195054053761 2448376.354781146 0.680289521052976 44.2094311483481 13.6427493706762 -86.2170240242655 2840455.0757442 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:46:17 2021-May-04 02:46
2002-Oct-15 00:33 < 00:01 Jupiter 1.75398850305302 1.75398808107224 1.75398892503369 2.28104550577882 2.05848102397444 2452562.523044799 0.393445140161603 44.418828899764 7.39515416522733 88.7351311551586 2975288.78100365 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:46:17 2021-May-04 02:46
2014-Apr-21 01:49 < 00:01 Jupiter 1.6839969223843 1.68399656013978 1.68399728462863 2.10710106305277 1.8530806981515 2456768.575555074 0.22271380538013 47.0683283799435 7.72442020758487 88.6191834401924 3076862.12426413 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:46:17 2021-May-04 02:46
2025-Nov-08 05:00 < 00:01 Jupiter 1.6380221767924 1.63802184588409 1.63802250770062 2.01643476828355 1.74120867687805 2460987.708099003 0.423155554221132 49.1591380538473 11.0223241047945 89.3308138032886 3141947.34303452 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:46:17 2021-May-04 02:46
2037-Jun-03 09:06 < 00:01 Jupiter 1.61267532139313 1.61267501625957 1.61267562652651 1.99189221575044 1.70797489885282 2465212.879364865 0.779487341715216 49.7542118599365 12.4519779540003 89.6369039997321 3261627.87616974 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:46:17 2021-May-04 02:46
2048-Dec-22 04:42 00:01 Jupiter 1.60718839405897 1.60718809530612 1.60718869281174 2.03483302387253 1.7568445696975 2469432.696063729 1.21988389109518 49.8283853163324 11.513773851165 88.7198874220855 3203079.01987425 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:46:17 2021-May-04 02:46
2060-Jun-27 22:38 00:02 Jupiter 1.63178366421204 1.63178325215452 1.63178407626946 2.18379360694517 1.93152766430192 2473638.443073562 1.75265354616528 55.2204773630557 7.16752378291824 88.146587469955 2686757.83878526 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:46:17 2021-May-04 02:46
2071-Dec-09 09:23 00:02 Jupiter 1.68964581788747 1.68964511050219 1.68964652527323 2.48274212230561 2.27187253619234 2477819.890809979 2.36680490634708 77.2580475640283 6.23122575064729 -84.499423178051 2526469.83604956 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:46:17 2021-May-04 02:46
2083-Apr-20 09:34 00:03 Jupiter 1.78876073230529 1.7887596247676 1.78876183984492 2.99341767507724 2.83081257611045 2481969.898536455 2.98680787279209 119.396421111279 11.9985289335247 -75.0095913877002 2903594.15209159 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:46:17 2021-May-04 02:46
2094-Aug-01 20:07 00:04 Jupiter 1.92184355807912 1.92184210863412 1.92184500752837 3.72052559288744 3.6001169350391 2486091.338143007 3.50332044629057 166.688490582232 15.2822551137291 -70.5060364958765 3509381.81971261 T 34 CATAB v2.0g-lin.ifort 2021-May-04 02:46:17 2021-May-04 02:46
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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