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187821 (1999 TS260)
Classification: Outer Main-belt Asteroid          SPK-ID: 2187821
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .11821997171408 4.3414e-08  
a 3.200227678324058 3.0052e-08 au
q 2.821896852713972 1.2883e-07 au
i 5.27002155118248 5.6936e-06 deg
node 233.2293463601359 5.3148e-05 deg
peri 240.3803382220468 5.9851e-05 deg
M 187.9691140964622 2.6389e-05 deg
tp 2460199.748873870770
(2023-Sep-12.24887387)
0.00015557 TDB
period 2091.075638564036
5.73
2.9454e-05
8.064e-08
d
yr
n .1721601999281173 2.425e-09 deg/d
Q 3.578558503934143 3.3604e-08 au
  Orbit Determination Parameters
   # obs. used (total)      364  
   data-arc span      7202 days (19.72 yr)  
   first obs. used      1999-10-11  
   last obs. used      2019-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54394  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:58  

Additional Information
 Earth MOID = 1.84311 au 
 Jupiter MOID = 1.57982 au 
 T_jup = 3.177 
[ 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 15.29   n/a MPCxxxxx  
diameter diameter 6.089 km 0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187821 (1999 TS260)          Discovered 1999-Oct-11 by Spacewatch at Kitt Peak
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

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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
1901-Dec-28 15:17 00:04 Jupiter 1.6056159350752 1.60561523745719 1.60561663269448 1.86246407590153 1.55360791871324 2415747.136849187 3.89902237209301 162.432779590364 52.7615329024642 67.5409111824026 1640554.02215484 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:59 2021-Apr-13 21:56
1912-Oct-25 16:38 00:03 Jupiter 1.78971472961777 1.7897132875921 1.78971617164568 2.62081469914593 2.43354165163814 2419701.192770870 3.32775919019774 156.938789724455 21.8157279958403 76.2464708945113 1416317.44598906 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:59 2021-Apr-13 21:56
1999-Sep-14 14:22 < 00:01 Jupiter 1.8998319732779 1.89983130098278 1.89983264557302 3.69097189877634 3.56813565581585 2451436.098712938 0.643225899032752 53.3977840232225 24.7413364887668 76.3892287630253 2238996.04073434 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:59 2021-Apr-13 21:56
2010-Jun-17 10:36 < 00:01 Jupiter 1.66614591051879 1.66614526323785 1.66614655779926 2.13977998234898 1.88730328084117 2455364.941913423 0.410559426218876 64.1259000113905 20.801137535812 -87.6456016322482 1562094.40494046 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:59 2021-Apr-13 21:56
2021-Mar-21 07:32 < 00:01 Jupiter 1.5796654623138 1.57966488645852 1.57966603817044 1.57341568413484 1.18457986539785 2459294.813739384 0.561238873976172 140.483406521794 75.5684052212799 54.2684638694918 2521428.25826332 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:59 2021-Apr-13 21:56
2032-Jan-09 09:36 00:01 Jupiter 1.69374369035062 1.69374289373892 1.69374448696174 2.2063441097066 1.96666632188482 2463240.899844067 1.01287928282448 92.9603642109096 21.8097393443508 85.6825849089356 1471971.63959343 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:59 2021-Apr-13 21:56
2042-Nov-05 12:43 00:01 Jupiter 1.96069447363649 1.96069331409207 1.96069563318136 3.19301054981125 3.05471992539412 2467194.029541939 1.4381997833303 93.9688542369781 28.3517134750476 66.7086849317422 1777218.59711849 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:59 2021-Apr-13 21:56
2129-Sep-20 20:59 00:05 Jupiter 1.73859874712187 1.7385967917846 1.73860070246931 2.80579755513162 2.62642840120163 2498924.374125186 4.50350453711715 258.506927469172 19.4848352235207 82.1624053689782 1554112.2325039 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:59 2021-Apr-13 21:56
2140-Jun-24 10:38 00:05 Jupiter 1.58065776183655 1.58065699516091 1.58065852851022 1.6233940684089 1.25046954212553 2502853.942709940 4.99576269366974 256.341179574939 105.899503888764 -34.7788967139251 943178.761658667 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:59 2021-Apr-13 21:56
2151-Apr-06 07:22 00:05 Jupiter 1.61805999031795 1.61805841527862 1.61806156536078 1.7565799741491 1.42779992570911 2506791.806874704 5.39565659550343 277.072399534494 60.9142915873853 55.5946756849826 1496400.56085172 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:59 2021-Apr-13 21:56
2162-Jan-25 12:46 00:06 Jupiter 1.83700652711664 1.83700342925514 1.83700962498304 2.72175988918345 2.54672337991173 2510739.031911601 5.79220089470122 237.787187589901 30.0686585848182 68.5341136747685 1174070.71517345 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:59 2021-Apr-13 21:56

Alternate Designations
 1999 TS260 = 2005 UG154 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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