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243655 (1999 US25)
Classification: Main-belt Asteroid          SPK-ID: 2243655
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2767176643559444 7.7422e-08  
a 2.53947730166228 7.9146e-09 au
q 1.836759074061358 2.0039e-07 au
i 4.797445050007692 6.0619e-06 deg
node 28.9327745651171 3.633e-05 deg
peri 338.6757697479994 3.7229e-05 deg
M 53.20767126459127 5.681e-06 deg
tp 2458782.032579554650
(2019-Oct-25.53257955)
2.3046e-05 TDB
period 1478.13782281926
4.05
6.9102e-06
1.892e-08
d
yr
n .243549684232672 1.1386e-09 deg/d
Q 3.242195529263202 1.0105e-08 au
  Orbit Determination Parameters
   # obs. used (total)      770  
   data-arc span      7391 days (20.24 yr)  
   first obs. used      1999-10-12  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54152  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 02:52:34  

Additional Information
 Earth MOID = .836943 au 
 Jupiter MOID = 2.2197 au 
 T_jup = 3.387 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457153.5 (2015-May-11.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2793173694039606 7.7926e-08  
q 1.828968088816816 2.0218e-07 au
tp 2457302.565732681970
(2015-Oct-07.06573268)
2.1275e-05 TDB
node 28.97936080254922 3.6246e-05 deg
peri 338.3329157467918 3.7112e-05 deg
i 4.808242580117091 6.074e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      770  
   data-arc span      7391 days (20.24 yr)  
   first obs. used      1999-10-12  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54152  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 02:52:34  

Additional Information
 Jupiter MOID = 2.2197 au 
 T_jup = 3.387 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.072497554526047E-15 -1.575138925969653E-14 1.174188921427898E-13 3.778621913021006E-14 6.779372557286961E-14 -2.880397351017129E-14
q -1.575138925969653E-14 4.08759179167736E-14 -3.043642900333559E-13 -9.869296648823743E-14 -1.773102061418079E-13 7.481280874544864E-14
tp 1.174188921427898E-13 -3.043642900333559E-13 4.526114411688935E-10 1.465404655205347E-12 1.744224202755867E-10 -1.0132182151124E-13
node 3.778621913021006E-14 -9.869296648823743E-14 1.465404655205347E-12 1.313771067937801E-9 -1.307774924190955E-9 -1.039720484464474E-10
peri 6.779372557286961E-14 -1.773102061418079E-13 1.744224202755867E-10 -1.307774924190955E-9 1.377332992901637E-9 1.033192840556128E-10
i -2.880397351017129E-14 7.481280874544864E-14 -1.0132182151124E-13 -1.039720484464474E-10 1.033192840556128E-10 3.689368346003085E-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 16.5   n/a MPO440240  

243655 (1999 US25)          Discovered 1999-Oct-29 by CSS at Catalina
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

[ 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
2012-Jun-16 14:18 < 00:01 Amphi 0.048432576257389 0.0484302786268282 0.0484348739176011 4.68153436783203 4.68153434247798 2456095.095587171 0.651012660324394 210.858598431337 107.813916234982 77.6830288895369 66038.5764350492 T 20 CATAB v2.0f-lin.ifort 2020-Jan-30 02:52:51 2020-Jan-30 02:52
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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