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175738 (1998 HR66)
Classification: Main-belt Asteroid          SPK-ID: 2175738
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 .1452346985582319 5.3164e-08  
a 3.055780912955015 2.6668e-08 au
q 2.611975493201995 1.7128e-07 au
i 11.49563106068204 5.9118e-06 deg
node 187.1475250076471 2.6826e-05 deg
peri 120.0301283346294 3.4711e-05 deg
M 2.253956127670861 1.9937e-05 deg
tp 2459188.284121477579
(2020-Dec-04.78412148)
0.00010802 TDB
period 1951.109967972677
5.34
2.5541e-05
6.993e-08
d
yr
n .1845103586724341 2.4153e-09 deg/d
Q 3.499586332708035 3.0541e-08 au
  Orbit Determination Parameters
   # obs. used (total)      610  
   data-arc span      9447 days (25.86 yr)  
   first obs. used      1994-10-08  
   last obs. used      2020-08-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58763  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:06:36  

Additional Information
 Earth MOID = 1.61932 au 
 Jupiter MOID = 1.92852 au 
 T_jup = 3.189 
[ 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 14.94   n/a E2021B55  
diameter diameter 3.004 km 0.729 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.258   0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

175738 (1998 HR66)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22

[ 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
1943-Mar-06 18:12 00:03 Jupiter 1.95955302307492 1.95955229134671 1.95955375480278 1.99752020901988 1.76793131951863 2430790.258532157 3.18235370019282 85.1780935601373 26.3776708985848 67.9602655425748 1606711.70426944 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:06:38 2021-Apr-13 21:06
1952-Aug-16 07:34 00:02 Jupiter 1.97948571562316 1.9794849807809 1.97948645046768 4.57400330551628 4.47947604743195 2434240.815317335 2.27720990534564 190.820001567565 27.3598120007763 -85.1511464302761 2368777.96354761 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:06:38 2021-Apr-13 21:06
2001-May-24 13:55 < 00:01 Jupiter 1.92662244511048 1.92662178817701 1.92662310204406 2.66042514903569 2.48969469408062 2452054.079642803 0.620411144136984 74.5817084972353 28.2446526622742 82.1990895696461 1843397.93470776 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:06:38 2021-Apr-13 21:06
2050-Apr-25 17:05 00:02 Jupiter 1.96863921575674 1.96863851936957 1.96863991214358 2.31600545829549 2.12211346246342 2469922.211864405 1.63429351531653 91.5628905571162 33.2653083867262 79.0790359944859 1328886.8344262 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:06:38 2021-Apr-13 21:06
2059-Sep-15 19:28 00:02 Jupiter 1.96622344877566 1.96622271488074 1.9662241826717 4.16818684052287 4.06352169235102 2473352.311101956 1.84415163418045 152.445265807322 27.442085743256 -85.1897143532893 2079838.11241056 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:06:38 2021-Apr-13 21:06
2108-Jul-14 13:02 00:04 Jupiter 1.94309646200909 1.94309578300595 1.94309714101245 2.19809385860318 1.98992187387471 2491186.043255197 4.30480165848354 90.0178738450861 61.9044162736761 -3.4548122412764 839332.062673195 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:06:38 2021-Apr-13 21:06
2157-Jun-09 10:11 00:06 Jupiter 1.98175732067732 1.98175639303146 1.98175824833164 2.75923892204959 2.59972687369289 2509047.923979509 5.95439123116394 327.044984051322 27.1907329619166 84.978936826389 1401850.77324296 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:06:38 2021-Apr-13 21:06
2166-Oct-21 02:29 00:06 Jupiter 1.96773090084878 1.96772999308597 1.96773180862435 3.67971945792775 3.56081764980851 2512468.603588541 6.20822991876977 373.47773677323 26.7788309792836 89.4892531197906 1697026.93361232 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:06:38 2021-Apr-13 21:06

Alternate Designations
 1998 HR66 = 2003 ES51 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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