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66187 (1998 XS73)
Classification: Outer Main-belt Asteroid          SPK-ID: 2066187
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1614997065611681 4.3924e-08  
a 3.984436881936064 4.0892e-08 au
q 3.340951494691895 1.7287e-07 au
i 7.672403397965678 5.4181e-06 deg
node 307.7025942291679 3.4207e-05 deg
peri 172.1975627566081 3.8232e-05 deg
M 278.3864102766444 1.979e-05 deg
tp 2460055.080448909743
(2023-Apr-20.58044891)
0.00016701 TDB
period 2905.01817664392
7.95
4.4721e-05
1.224e-07
d
yr
n .1239234931107719 1.9077e-09 deg/d
Q 4.627922269180234 4.7496e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1661  
   data-arc span      11014 days (30.15 yr)  
   first obs. used      1990-12-09  
   last obs. used      2021-02-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45775  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:20:06  

Additional Information
 Earth MOID = 2.35761 au 
 Jupiter MOID = .474188 au 
 T_jup = 3.018 
[ 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 12.18   n/a E2021B10  
diameter diameter 21.658 km 0.725 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 31.034 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.065   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

66187 (1998 XS73)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20030910/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
1919-Jun-28 20:20 00:01 Jupiter 1.86474708062738 1.86474642354243 1.86474773771222 4.95557945452003 4.86305556190478 2422138.347497791 1.33120731565735 58.5468010164765 30.8400704972626 88.8314454520865 3159223.2916275 T 31 CATAB v2.0f-lin.ifort 2021-Apr-13 12:20:13 2021-Apr-13 12:20
1943-Apr-12 03:11 00:02 Jupiter 1.8469313942475 1.84693067334375 1.84693211515137 4.92107573727578 4.82698301213958 2430826.632628884 1.92357970840493 68.6029089710233 31.6336929737619 78.4279860042512 3056809.39444179 T 31 CATAB v2.0f-lin.ifort 2021-Apr-13 12:20:13 2021-Apr-13 12:20
1967-Jun-13 18:50 00:02 Jupiter 1.89738769411977 1.89738702950889 1.89738835873064 5.04136447145137 4.95202236873182 2439655.284947193 1.78257169997196 54.4206560608513 31.4856807857734 85.9960185695021 3320969.01981974 T 31 CATAB v2.0f-lin.ifort 2021-Apr-13 12:20:13 2021-Apr-13 12:20
1991-Oct-22 07:33 00:01 Jupiter 1.9406513833939 1.94065074815218 1.94065201863562 4.94972440406983 4.86074538422671 2448551.814573857 1.0723902907712 57.3462546681215 29.2244323739894 -82.8644457626967 3083151.36000087 T 31 CATAB v2.0f-lin.ifort 2021-Apr-13 12:20:13 2021-Apr-13 12:20
2016-Feb-25 18:02 < 00:01 Jupiter 1.95397178327544 1.9539711225248 1.95397244402597 4.59651898276977 4.50122334341282 2457444.251652468 0.354207219844678 68.6290903438959 30.3426495677476 -87.8425859304046 2939364.83894791 T 31 CATAB v2.0f-lin.ifort 2021-Apr-13 12:20:13 2021-Apr-13 12:20
2040-Apr-03 10:39 00:01 Jupiter 1.94454463287061 1.94454396337828 1.94454530236294 4.26515705554616 4.16177683712682 2466247.943875697 1.41548933121691 80.3574716545622 29.6047217368519 87.1270511234515 2730863.91806263 T 31 CATAB v2.0f-lin.ifort 2021-Apr-13 12:20:13 2021-Apr-13 12:20
2063-Nov-28 06:42 00:02 Jupiter 1.99229500115338 1.99229436769855 1.99229563460821 4.44859391206154 4.35197535719693 2474886.778992059 2.1566574985243 87.7370997023237 28.1763254127946 87.7210334445538 2794140.95610046 T 31 CATAB v2.0f-lin.ifort 2021-Apr-13 12:20:13 2021-Apr-13 12:20
2156-Mar-20 11:10 00:01 Jupiter 1.99353588530926 1.99353525336456 1.99353651725396 5.54199680655618 5.46479273079663 2508601.965033396 1.2643783946502 55.6220029228131 29.0119368542793 80.9498776416798 3519872.52470029 T 31 CATAB v2.0f-lin.ifort 2021-Apr-13 12:20:13 2021-Apr-13 12:20
2179-Jul-27 01:09 00:01 Jupiter 1.90502011035992 1.9050194714548 1.90502074926504 5.14248696510552 5.05528625251925 2517130.547945276 1.39511997569007 69.3233484088855 28.7922867868824 82.935447939534 3328941.10759109 T 31 CATAB v2.0f-lin.ifort 2021-Apr-13 12:20:13 2021-Apr-13 12:20

Alternate Designations
 1998 XS73 = 1996 SM8 = 1999 BW16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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