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74145 (1998 QO84)
Classification: Main-belt Asteroid          SPK-ID: 2074145
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .302614487788157 3.0543e-08  
a 2.653638689257077 1.053e-08 au
q 1.85060917653271 7.966e-08 au
i 10.0441547444248 3.696e-06 deg
node 287.8337667923591 2.823e-05 deg
peri 19.95261262502466 2.968e-05 deg
M 26.35293293444684 1.0044e-05 deg
tp 2458884.918701683690
(2020-Feb-05.41870168)
4.3671e-05 TDB
period 1578.923586887839
4.32
9.3981e-06
2.573e-08
d
yr
n .2280034341051193 1.3571e-09 deg/d
Q 3.456668201981443 1.3717e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1158  
   data-arc span      8176 days (22.38 yr)  
   first obs. used      1998-06-29  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47715  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:00:14  

Additional Information
 Earth MOID = .838987 au 
 Jupiter MOID = 1.8304 au 
 T_jup = 3.301 
[ 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 MPO474627  
diameter diameter 7.609 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 62.4027 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.044   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74145 (1998 QO84)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20040415/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
1930-Dec-04 23:31 00:01 Jupiter 1.83320396251097 1.83320339987414 1.83320452517958 2.74515646221651 2.57134094007756 2426315.480121232 1.41023578115612 425.728399701815 9.79367911550341 -86.296614883498 2761744.90305088 T 21 CATAB v2.0f-lin.ifort 2020-Dec-17 22:00:16 2020-Dec-17 22:00
1978-Sep-09 18:01 < 00:01 Jupiter 1.8122580961243 1.812257812599 1.81225837965332 2.69910328840229 2.5199976723009 2443761.250641015 0.636224586597643 214.310809238803 12.9187764102458 -86.9527569744549 2992103.79525609 T 21 CATAB v2.0f-lin.ifort 2020-Dec-17 22:00:16 2020-Dec-17 22:00
2026-Jun-14 06:44 < 00:01 Jupiter 1.83360520208654 1.83360492997451 1.83360547420075 2.61219539900169 2.42892512133289 2461205.780406197 0.209936046738882 154.531924811962 12.1449847069181 -85.5721525524714 3008838.51827635 T 21 CATAB v2.0f-lin.ifort 2020-Dec-17 22:00:16 2020-Dec-17 22:00
2074-Mar-22 12:41 < 00:01 Jupiter 1.89652022913247 1.89651976175368 1.89652069651147 2.4753534886067 2.28782348883929 2478654.028138086 0.911553488482437 180.374033100356 31.1890298713188 88.4347372353756 2884952.05189749 T 21 CATAB v2.0f-lin.ifort 2020-Dec-17 22:00:16 2020-Dec-17 22:00
2122-Jan-03 19:36 00:02 Jupiter 1.99504055877996 1.99503946535512 1.99504165220503 2.28668299566022 2.09279502253373 2496107.316986341 1.7082036673638 191.193090832586 74.1322495018635 -88.0127804925677 2631571.4369982 T 21 CATAB v2.0f-lin.ifort 2020-Dec-17 22:00:16 2020-Dec-17 22:00
2155-Dec-19 13:07 00:02 Jupiter 1.95111443798495 1.95111308921588 1.95111578679471 2.84574871366884 2.68887353871406 2508510.046451937 2.21322375095369 476.764653989326 8.79470030322092 -82.5793984014513 2524136.64533918 T 21 CATAB v2.0f-lin.ifort 2020-Dec-17 22:00:16 2020-Dec-17 22:00
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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