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91638 (1999 TQ82)
Classification: Main-belt Asteroid          SPK-ID: 2091638
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2101434908998694 4.9511e-08  
a 3.073738157720724 1.6804e-08 au
q 2.427812091145158 1.594e-07 au
i 6.389383684643269 4.1236e-06 deg
node 25.77340518355519 4.1456e-05 deg
peri 320.3328008578274 4.2776e-05 deg
M 321.3051476837733 9.5014e-06 deg
tp 2459212.067728054966
(2020-Dec-28.56772806)
5.2412e-05 TDB
period 1968.333706957925
5.39
1.6141e-05
4.419e-08
d
yr
n .1828958162568799 1.4998e-09 deg/d
Q 3.71966422429629 2.0335e-08 au
  Orbit Determination Parameters
   # obs. used (total)      685  
   data-arc span      7681 days (21.03 yr)  
   first obs. used      1999-09-09  
   last obs. used      2020-09-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54694  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:39:07  

Additional Information
 Earth MOID = 1.4254 au 
 Jupiter MOID = 1.72538 au 
 T_jup = 3.186 
[ 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 14.8   n/a MPO474794  
diameter diameter 4.978 km 0.770 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 7.146 h n/a LCDB (Rev. 2019-August); 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 0.086   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

91638 (1999 TQ82)          Discovered 1999-Oct-12 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ 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
1921-May-01 03:55 00:02 Jupiter 1.73886533901257 1.73886487536487 1.73886580266046 1.83774483304489 1.55018762642213 2422810.663264289 2.42171266905706 287.365397653537 54.5681932569115 87.2777306016965 1704977.4913403 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 20:39:08 2020-Nov-12 20:39
1930-Dec-15 15:32 00:02 Jupiter 1.96293853136718 1.96293763012967 1.96293943260413 2.56824945486343 2.39434551566124 2426326.147211580 2.17919528923111 49.5640685143858 11.3930875056435 -81.8595910472139 1232103.844359 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 20:39:08 2020-Nov-12 20:39
1980-Aug-16 06:05 < 00:01 Jupiter 1.7338828415209 1.73388239756943 1.7338832854767 1.83906200272626 1.55084658099199 2444467.753315038 0.896969195532347 235.337289092587 53.0839442202065 -89.5485954926042 1960139.5614819 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 20:39:08 2020-Nov-12 20:39
1990-Apr-02 19:01 < 00:01 Jupiter 1.98234707291063 1.9823465634575 1.98234758236365 2.66583797452966 2.50042532404415 2447984.292484857 0.622140536662417 40.284923744621 10.9042056422579 -76.7165495943831 2293570.32982876 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 20:39:08 2020-Nov-12 20:39
2039-Dec-02 20:52 < 00:01 Jupiter 1.73031184974008 1.73031136423876 1.73031233524425 1.84355846454615 1.55552804947002 2466125.369450521 0.704501978669452 194.644791308079 54.258762696588 -87.9443271060779 1850546.11359754 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 20:39:08 2020-Nov-12 20:39
2099-Mar-21 01:12 00:02 Jupiter 1.72828974554188 1.72828923744122 1.72829025364254 1.85147747972399 1.56453925432363 2487783.549691496 2.21223117139901 223.40434851415 58.0663450226111 87.5114173254498 1517463.50008798 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 20:39:08 2020-Nov-12 20:39
2158-Jul-08 18:24 00:04 Jupiter 1.72779881768434 1.72779832779477 1.72779930757362 1.86271946095218 1.57773873175034 2509442.266952761 3.75878282902549 341.38307637693 56.9309014369224 85.1052689848577 1521916.15238209 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 20:39:08 2020-Nov-12 20:39
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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