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120944 (1998 TH23)
Classification: Main-belt Asteroid          SPK-ID: 2120944
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1107084232310068 4.7012e-08  
a 3.152378749384422 2.9556e-08 au
q 2.803383868613139 1.5522e-07 au
i 17.87337584236033 6.3354e-06 deg
node 19.76573108785343 1.7842e-05 deg
peri 68.44389042560101 3.9373e-05 deg
M 251.0742908231442 3.4733e-05 deg
tp 2459619.062957848192
(2022-Feb-08.56295785)
0.00019973 TDB
period 2044.353592078005
5.60
2.8751e-05
7.872e-08
d
yr
n .1760947819374407 2.4766e-09 deg/d
Q 3.501373630155704 3.2828e-08 au
  Orbit Determination Parameters
   # obs. used (total)      516  
   data-arc span      8055 days (22.05 yr)  
   first obs. used      1998-09-25  
   last obs. used      2020-10-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51659  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:53:36  

Additional Information
 Earth MOID = 1.87389 au 
 Jupiter MOID = 1.87866 au 
 T_jup = 3.123 
[ 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 MPO351700  

120944 (1998 TH23)          Discovered 1998-Oct-14 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ 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
1987-Jun-28 09:05 00:01 Jupiter 1.98475133279597 1.98475048164557 1.98475218395787 6.24810961047755 6.17942906670213 2446974.878807188 1.19121754489037 338.569474802423 27.9880037075341 -84.8216858069703 2747073.3652772 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:53:37 2020-Nov-12 17:53
1998-Feb-15 12:57 < 00:01 Jupiter 1.97458989884941 1.97458923559385 1.97459056210655 4.84870776420844 4.75941640525285 2450860.039695417 0.897042026624392 455.406746338838 29.9042229366217 -88.8506813651161 2039127.04890017 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:53:37 2020-Nov-12 17:53
2093-Mar-22 04:03 00:03 Jupiter 1.92978418734213 1.92978321420538 1.92978516053417 5.1809251359848 5.09550228777255 2485593.668654122 2.99181105096965 787.0435089891 35.728797643401 -87.3152383431813 2186682.20906144 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:53:37 2020-Nov-12 17:53
2188-Apr-24 05:25 00:07 Jupiter 1.89489845754258 1.89489744379151 1.89489947138402 5.43152376653537 5.34859302620864 2520324.725705564 6.56998043831769 898.930974444443 35.0646612443547 -87.203611720705 1705614.28765257 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 17:53:37 2020-Nov-12 17:53
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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