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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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09094136971253225 4.7995e-08  
a 3.189378268837979 2.268e-08 au
q 2.899331840538468 1.5607e-07 au
i 5.779083012797944 5.5273e-06 deg
node 44.88223701185427 4.2491e-05 deg
peri 201.4376885977835 5.111e-05 deg
M 348.8200631675085 2.7052e-05 deg
tp 2459065.109193821584
(2020-Aug-03.60919382)
0.00015612 TDB
period 2080.450911687906
5.70
2.2192e-05
6.076e-08
d
yr
n .1730394108207657 1.8458e-09 deg/d
Q 3.479424697137489 2.4743e-08 au
  Orbit Determination Parameters
   # obs. used (total)      773  
   data-arc span      10661 days (29.19 yr)  
   first obs. used      1991-04-08  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58448  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:16:38  

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 1.90559375848892 1.90559295302548 1.90559456395247 2.88739654218224 2.72911586246561 2443626.046214852 1.35968306521359 61.7186619096809 18.6233684446004 -66.3491098755295 2430801.07006711 T 20 CATAB v2.0f-lin.ifort 2020-Jun-24 00:16:54 2020-Jun-24 00:16
1989-Mar-17 09:17 < 00:01 Jupiter 1.6488012224042 1.64880059334037 1.64880185146831 2.30262553497689 2.06752120365187 2447602.887125243 0.985958943703009 76.3233774568066 10.0569933772603 -74.4890219696481 2150764.91239902 T 20 CATAB v2.0f-lin.ifort 2020-Jun-24 00:16:54 2020-Jun-24 00:16
2000-Feb-21 04:17 < 00:01 Jupiter 1.5318865843394 1.53188607254096 1.53188709613863 2.22726855723643 1.96338224475499 2451595.678560493 0.576739231607935 116.972321532212 18.7681183437814 -79.6676901166465 1823548.66371595 T 20 CATAB v2.0f-lin.ifort 2020-Jun-24 00:16:54 2020-Jun-24 00:16
2011-Jan-26 09:17 < 00:01 Jupiter 1.6162346499738 1.61623413803455 1.61623516191315 2.4745930064187 2.25287983464279 2455587.886648877 0.292941291487962 89.8919971954955 15.2118856821505 -84.0989286820398 2073063.40770717 T 20 CATAB v2.0f-lin.ifort 2020-Jun-24 00:16:54 2020-Jun-24 00:16
2021-Dec-12 03:11 < 00:01 Jupiter 1.85957165037505 1.85957106011079 1.85957224063921 3.18263123525619 3.03614144676676 2459560.632580373 0.395887099654546 51.9618340328117 22.083891815061 -89.8455664224743 2652985.33378927 T 20 CATAB v2.0f-lin.ifort 2020-Jun-24 00:16:54 2020-Jun-24 00:16
2120-May-17 10:03 00:03 Jupiter 1.78014238107653 1.78014085345048 1.78014390870309 2.45124508319524 2.24877030543744 2495510.918908623 2.82891185380571 103.209029727222 13.3146407094445 -64.6808219780544 1835884.81016374 T 20 CATAB v2.0f-lin.ifort 2020-Jun-24 00:16:54 2020-Jun-24 00:16
2131-Apr-15 10:01 00:03 Jupiter 1.58338730414102 1.58338634321866 1.58338826506563 2.17221526322175 1.91013937736265 2499495.917425731 3.08190501135757 130.342595342065 18.4773386498165 -72.5628192180304 1905334.18530021 T 20 CATAB v2.0f-lin.ifort 2020-Jun-24 00:16:54 2020-Jun-24 00:16
2142-Mar-24 02:49 00:03 Jupiter 1.55565586683376 1.55565511336191 1.55565662031128 2.33301210663369 2.08662089589849 2503491.617363010 3.47608817822408 198.545444134951 18.7463363491016 -85.6080456571652 1731189.58685584 T 20 CATAB v2.0f-lin.ifort 2020-Jun-24 00:16:54 2020-Jun-24 00:16
2153-Feb-18 09:19 00:04 Jupiter 1.72065316801614 1.72065115129702 1.72065518474816 2.8336721164139 2.65427233675413 2507475.888045778 4.0735726323893 274.642082734951 20.6345431861863 -75.3084402015965 2263252.4288945 T 20 CATAB v2.0f-lin.ifort 2020-Jun-24 00:16:54 2020-Jun-24 00:16
2164-Jan-01 23:40 00:04 Jupiter 1.99672961621289 1.99672708997808 1.99673214244941 3.77855501752089 3.66456930508196 2511445.486029299 4.45090287279409 162.239743059977 36.5284219320331 -49.5371925473697 1914288.48513421 T 20 CATAB v2.0f-lin.ifort 2020-Jun-24 00:16:54 2020-Jun-24 00:16

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