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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09094136969515522 4.8139e-08  
a 3.189378268941463 2.3267e-08 au
q 2.899331840687964 1.5695e-07 au
i 5.779083249127194 5.5796e-06 deg
node 44.88223189404506 4.6802e-05 deg
peri 201.4376938785711 5.5441e-05 deg
M 348.8200629365249 2.9282e-05 deg
tp 2459065.109195159589
(2020-Aug-03.60919516)
0.00016908 TDB
period 2080.450911789162
5.70
2.2765e-05
6.233e-08
d
yr
n .1730394108123438 1.8935e-09 deg/d
Q 3.479424697194963 2.5383e-08 au
  Orbit Determination Parameters
   # obs. used (total)      702  
   data-arc span      10613 days (29.06 yr)  
   first obs. used      1991-04-08  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59912  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:36:58  

Additional Information
 Earth MOID = 1.887 au 
 Jupiter MOID = 1.5358 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 00:01 Jupiter 1.90559376382683 1.90559290667221 1.90559462098156 2.88739655359799 2.72911587499967 2443626.046218645 1.41078132688334 65.7485237024735 19.9817924223058 -66.3514488306789 2299048.65772391 T 19 CATAB v2.0f-lin.ifort 2020-May-20 15:37:12 2020-May-20 15:37
1989-Mar-17 09:17 00:01 Jupiter 1.64880122751336 1.64880058650438 1.64880186852272 2.30262550107637 2.06752116666637 2447602.887109461 1.01403717465132 80.231888819548 10.6752633898417 -74.8381578812979 2145223.1280459 T 19 CATAB v2.0f-lin.ifort 2020-May-20 15:37:12 2020-May-20 15:37
2000-Feb-21 04:17 < 00:01 Jupiter 1.53188658587188 1.53188606882004 1.53188710292451 2.22726859289451 1.96338228548738 2451595.678571382 0.585733670661099 118.224356105853 19.9624021989524 -80.0975766552751 1794220.19161896 T 19 CATAB v2.0f-lin.ifort 2020-May-20 15:37:12 2020-May-20 15:37
2011-Jan-26 09:17 < 00:01 Jupiter 1.61623464876776 1.61623412235724 1.61623517517837 2.47459303738586 2.25287986848394 2455587.886658768 0.293199184286493 90.8040027051781 16.6571381564289 -84.3168373169264 2007577.43841615 T 19 CATAB v2.0f-lin.ifort 2020-May-20 15:37:12 2020-May-20 15:37
2021-Dec-12 03:11 < 00:01 Jupiter 1.85957165047547 1.8595710583896 1.85957224256123 3.18263123347224 3.03614144490484 2459560.632586657 0.416666220875549 52.3801362020393 22.1489391852378 89.8674332376064 2614457.89852451 T 19 CATAB v2.0f-lin.ifort 2020-May-20 15:37:12 2020-May-20 15:37
2120-May-17 10:03 00:03 Jupiter 1.78014238932853 1.78014080184713 1.78014397681053 2.45124504630909 2.24877026621098 2495510.918905838 2.99663227541656 109.830553984062 14.162710282181 -65.1259055576354 1747684.77332786 T 19 CATAB v2.0f-lin.ifort 2020-May-20 15:37:12 2020-May-20 15:37
2131-Apr-15 10:01 00:03 Jupiter 1.5833873095779 1.58338629704037 1.58338832211804 2.17221526986169 1.91013938587524 2499495.917421594 3.26585021757687 138.052465762777 18.9906832911369 -72.8532273096223 1895760.16684539 T 19 CATAB v2.0f-lin.ifort 2020-May-20 15:37:12 2020-May-20 15:37
2142-Mar-24 02:49 00:04 Jupiter 1.55565586721951 1.55565511157054 1.55565662287432 2.33301217551 2.08662097297251 2503491.617354755 3.67703135755817 202.598326108073 19.6710488763572 -85.8347054565583 1723606.33876313 T 19 CATAB v2.0f-lin.ifort 2020-May-20 15:37:12 2020-May-20 15:37
2153-Feb-18 09:19 00:04 Jupiter 1.72065316650525 1.72065108958201 1.72065524344267 2.83367214560538 2.65427236775577 2507475.888050257 4.30125963056385 287.114662792987 21.7913913013786 -75.4736235194836 2226311.549423 T 19 CATAB v2.0f-lin.ifort 2020-May-20 15:37:12 2020-May-20 15:37
2164-Jan-01 23:40 00:05 Jupiter 1.99672961752921 1.99672699462349 1.99673224043686 3.77855499243457 3.66456927929165 2511445.486034884 4.69995537556786 169.732826575442 36.7311485048027 -49.7486904304833 1907983.02401794 T 19 CATAB v2.0f-lin.ifort 2020-May-20 15:37:12 2020-May-20 15:37

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