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100341 (1995 ST44)
Classification: Mars-crossing Asteroid          SPK-ID: 2100341
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3080597640595981 5.1236e-08  
a 2.355482542861131 8.6393e-09 au
q 1.629853146460829 1.2302e-07 au
i 3.989019011300433 5.9448e-06 deg
node 193.1822645412929 6.1352e-05 deg
peri 175.5422001487208 6.175e-05 deg
M 298.7853471032787 8.4632e-06 deg
tp 2459225.028333136556
(2021-Jan-10.52833314)
3.195e-05 TDB
period 1320.438752883782
3.62
7.2646e-06
1.989e-08
d
yr
n .2726366514264862 1.4999e-09 deg/d
Q 3.081111939261434 1.1301e-08 au
  Orbit Determination Parameters
   # obs. used (total)      468  
   data-arc span      9177 days (25.13 yr)  
   first obs. used      1995-09-20  
   last obs. used      2020-11-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56226  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:28:02  

Additional Information
 Earth MOID = .629226 au 
 Jupiter MOID = 2.38397 au 
 T_jup = 3.486 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456519.5 (2013-Aug-15.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3066364535312128 5.1032e-08  
q 1.63317701684824 1.2228e-07 au
tp 2456585.708899917001
(2013-Oct-20.20889992)
2.3998e-05 TDB
node 193.3146333918519 6.1476e-05 deg
peri 175.5660384045888 6.1881e-05 deg
i 3.983069637994709 5.9388e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      468  
   data-arc span      9177 days (25.13 yr)  
   first obs. used      1995-09-20  
   last obs. used      2020-11-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56226  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:28:02  

Additional Information
 Jupiter MOID = 2.38397 au 
 T_jup = 3.486 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.604253851687004E-15 -6.233837863128236E-15 -2.824572061788645E-13 -1.013136401379541E-14 -4.639981115662573E-14 -2.55644060728994E-15
q -6.233837863128236E-15 1.495338112468548E-14 7.154921693934414E-13 2.383215605086558E-14 1.187757694090479E-13 6.225062270062138E-15
tp -2.824572061788645E-13 7.154921693934414E-13 5.758863996497393E-10 3.787902425641651E-12 1.789917155250084E-10 2.415757017929941E-13
node -1.013136401379541E-14 2.383215605086558E-14 3.787902425641651E-12 3.779294842680228E-9 -3.768251857051085E-9 -3.407160698744913E-11
peri -4.639981115662573E-14 1.187757694090479E-13 1.789917155250084E-10 -3.768251857051085E-9 3.829268462519042E-9 3.401232103223012E-11
i -2.55644060728994E-15 6.225062270062138E-15 2.415757017929941E-13 -3.407160698744913E-11 3.401232103223012E-11 3.526901631672592E-11

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 16.1   n/a MPO432532  

100341 (1995 ST44)          Discovered 1995-Sep-25 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ 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
2162-Oct-22 04:47 < 00:01 Hebe 0.018449902126405 0.0184465462843885 0.0184532680968068 4.56176462049616 4.56176454663253 2511008.699036304 0.967218772797831 717.507459391897 36.0396058151364 76.8029645798278 74528.3541546835 T 19 CATAB v2.0f-lin.ifort 2020-Dec-18 04:28:03 2020-Dec-18 04:28

Alternate Designations
 1995 ST44 = 2000 AM122 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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