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181953 (1999 TH245)
Classification: Main-belt Asteroid          SPK-ID: 2181953
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1376174387036383 5.753e-08  
a 3.131750210393019 3.2305e-08 au
q 2.700766767779152 1.8745e-07 au
i 5.421865389064939 7.1119e-06 deg
node 17.57047646302155 5.7929e-05 deg
peri 297.9216760794375 6.2276e-05 deg
M 342.3977199482823 2.467e-05 deg
tp 2459299.479561469829
(2021-Mar-25.97956147)
0.00013943 TDB
period 2024.319691792494
5.54
3.1322e-05
8.575e-08
d
yr
n .1778375231242389 2.7517e-09 deg/d
Q 3.562733653006887 3.6751e-08 au
  Orbit Determination Parameters
   # obs. used (total)      343  
   data-arc span      21795 days (59.67 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-05-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54641  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:44  

Additional Information
 Earth MOID = 1.6909 au 
 Jupiter MOID = 1.76078 au 
 T_jup = 3.191 
[ 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 15.43   n/a E2021B55  
diameter diameter 5.379 km 0.143 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

181953 (1999 TH245)          Discovered 1999-Oct-07 by CSS at Catalina
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ 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
1906-May-24 07:43 00:06 Jupiter 1.80113554924046 1.80113461256185 1.80113648591805 2.51637183652982 2.32197856313622 2417354.821706013 5.72359210025009 73.8724931184054 18.4688481730665 -71.4146486320924 728555.57952626 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:45 2021-Apr-13 21:32
1916-Sep-29 00:45 00:05 Jupiter 1.98873404168212 1.98873237147356 1.98873571189599 4.14002485782788 4.03583758636167 2421135.531193421 4.82297613610038 197.851232532258 26.0232538997035 -71.1650809085397 2139448.7741889 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:45 2021-Apr-13 21:32
1979-Aug-25 17:21 00:02 Jupiter 1.85670532085717 1.85670452617412 1.85670611554002 2.42714599342805 2.23128766140355 2444111.223027636 1.87211154792175 85.7375443397401 17.7395027428815 -83.8669178447409 1560313.57912239 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:45 2021-Apr-13 21:32
1989-Dec-22 11:47 00:01 Jupiter 1.78192508532383 1.78192451634709 1.78192565430056 2.2154123581807 1.98931380165162 2447882.990724248 1.33997003425212 77.0408048385564 7.55063717668333 -75.1709405286345 2057529.4297773 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:45 2021-Apr-13 21:32
2000-Apr-19 17:22 < 00:01 Jupiter 1.92365533597734 1.92365469273865 1.92365597921613 3.60753762107218 3.4833445350231 2451654.223267289 0.726931131134613 61.5149471492921 21.2611969274451 -76.7204341257546 2209097.34748767 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:45 2021-Apr-13 21:32
2063-Mar-14 04:09 00:02 Jupiter 1.91752205006879 1.91752117540236 1.91752292473523 2.70776766166492 2.53939961552665 2474627.672730682 2.35012083990729 102.945075494183 23.5370407871353 -84.0450903328367 1558193.14498714 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:45 2021-Apr-13 21:32
2073-Jul-22 05:05 00:03 Jupiter 1.78909505774939 1.78909448469926 1.78909563079952 2.14819375697396 1.91516679555429 2478410.711513217 3.09008390874784 85.4165956987573 11.6310488021694 -81.2002408132375 2165716.22100567 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:45 2021-Apr-13 21:32
2083-Nov-13 20:09 00:04 Jupiter 1.87822619936882 1.8782252741068 1.87822712463084 3.08963684884409 2.94005392651444 2482177.339688325 3.65380271471526 71.4984854608566 16.6165558204201 -74.9408159898302 1176409.46185937 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:45 2021-Apr-13 21:32
2146-Sep-30 13:45 00:06 Jupiter 1.98810841729242 1.98810634013872 1.98811049445403 2.99257060714635 2.84664539152449 2505143.073170431 6.40121190177834 251.834836513989 33.4112985842039 -74.7430565377859 1579213.58719834 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:45 2021-Apr-13 21:32
2157-Feb-17 13:12 00:07 Jupiter 1.80787539391666 1.80787447799991 1.80787630983402 2.24710779067527 2.02791938663259 2508936.050140855 7.32471461247648 123.45950454437 18.0497762252337 -89.6171206455304 1416707.12056419 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:45 2021-Apr-13 21:32
2167-Jun-13 02:20 00:08 Jupiter 1.84088376002136 1.84088237254153 1.84088514749941 2.63875051359876 2.45820455275781 2512703.597264078 8.11037412310581 69.4387599555194 10.5962540980764 -75.9530743254635 555156.143619427 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:45 2021-Apr-13 21:32

Alternate Designations
 1999 TH245 = 2005 UT294 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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