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85458 (1997 HD8)
Classification: Main-belt Asteroid          SPK-ID: 2085458
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09073390497665282 4.8988e-08  
a 3.189387546270341 2.7749e-08 au
q 2.900001959713328 1.6197e-07 au
i 5.779165300739974 5.6375e-06 deg
node 44.8848740192251 5.5768e-05 deg
peri 201.2804184521699 6.7298e-05 deg
M 279.7252110125063 4.0659e-05 deg
tp 2459064.412462879521
(2020-Aug-02.91246288)
0.0002364 TDB
period 2080.459989283142
5.70
2.7152e-05
7.434e-08
d
yr
n .1730386558042119 2.2583e-09 deg/d
Q 3.478773132827354 3.0267e-08 au
  Orbit Determination Parameters
   # obs. used (total)      632  
   data-arc span      10257 days (28.08 yr)  
   first obs. used      1991-04-08  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60983  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:55:32  

Additional Information
 Earth MOID = 1.88751 au 
 Jupiter MOID = 1.5364 au 
 T_jup = 3.183 
[ 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 14.4   n/a MPO436373  
diameter diameter 6.732 km 0.288 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85458 (1997 HD8)          Discovered 1997-Apr-30 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ 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
1978-Apr-27 13:07 00:02 Jupiter 1.90559365512134 1.905592506777 1.90559480346568 2.88739599115433 2.7291152706449 2443626.046215453 1.74034020880226 77.1665835631842 25.904063474455 -62.1126454413013 1794114.82108591 T 17 CATAB v2.0e-lin.ifort 2019-May-30 05:55:38 2019-May-30 05:55
1989-Mar-17 09:17 00:01 Jupiter 1.64880113624022 1.64880041759064 1.64880185489037 2.30262509590653 2.06752070166867 2447602.887122843 1.20549141156903 93.2446490305872 12.8996745552375 -74.5312426667384 2082134.91139502 T 17 CATAB v2.0e-lin.ifort 2019-May-30 05:55:38 2019-May-30 05:55
2000-Feb-21 04:17 < 00:01 Jupiter 1.53188654132296 1.53188599600311 1.53188708664386 2.22726840627564 1.96338206559639 2451595.678602411 0.652723882006775 127.278007570869 22.4393523308509 -81.8002241371255 1709287.54796969 T 17 CATAB v2.0e-lin.ifort 2019-May-30 05:55:38 2019-May-30 05:55
2011-Jan-26 09:17 < 00:01 Jupiter 1.61623465383852 1.61623404775395 1.61623525992328 2.47459312146536 2.25287996156781 2455587.886693766 0.295523540105406 97.9788488695014 19.4618759125671 -85.289973849901 1817195.57453331 T 17 CATAB v2.0e-lin.ifort 2019-May-30 05:55:38 2019-May-30 05:55
2021-Dec-12 03:11 < 00:01 Jupiter 1.85957169161473 1.85957108474217 1.85957229848717 3.18263149688246 3.03614172434323 2459560.632645274 0.532382206622287 55.5187975220281 22.5725424869902 88.2558644337867 2422631.72217722 T 17 CATAB v2.0e-lin.ifort 2019-May-30 05:55:38 2019-May-30 05:55
2120-May-17 10:03 00:04 Jupiter 1.78014238069593 1.78014043790878 1.7801443234844 2.45124480027178 2.24876999699488 2495510.919059152 3.9720277838574 139.637154470723 15.6943922722915 -65.2610932979023 1587379.3890123 T 17 CATAB v2.0e-lin.ifort 2019-May-30 05:55:38 2019-May-30 05:55
2131-Apr-15 10:01 00:04 Jupiter 1.5833872916554 1.58338599458074 1.58338858873483 2.1722149648514 1.9101390358468 2499495.917580057 4.33543842526352 177.618150968769 19.8919206933779 -73.0041252604084 1827139.92311816 T 17 CATAB v2.0e-lin.ifort 2019-May-30 05:55:38 2019-May-30 05:55
2142-Mar-24 02:49 00:05 Jupiter 1.5556558262009 1.55565504359681 1.5556566088125 2.33301196765365 2.08662073369192 2503491.617531388 4.85560220465146 231.436608074202 21.2432614610629 -86.7116518103285 1705523.05481406 T 17 CATAB v2.0e-lin.ifort 2019-May-30 05:55:38 2019-May-30 05:55
2153-Feb-18 09:19 00:06 Jupiter 1.72065310482557 1.72065063100312 1.72065557867129 2.8336720258361 2.65427223324319 2507475.888245672 5.64654810152235 362.687339211266 24.970161504798 -75.965847414126 2100680.94139839 T 17 CATAB v2.0e-lin.ifort 2019-May-30 05:55:38 2019-May-30 05:55
2164-Jan-01 23:40 00:06 Jupiter 1.99672956287728 1.99672633694968 1.99673278880851 3.77855500069246 3.66456928463801 2511445.486233281 6.17087801520123 215.061747467375 38.5140433687765 -50.5232332390613 1849020.33682944 T 17 CATAB v2.0e-lin.ifort 2019-May-30 05:55:38 2019-May-30 05:55

Alternate Designations
 1997 HD8 = 2002 CB168 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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