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187845 (1999 XW109)
Classification: Main-belt Asteroid          SPK-ID: 2187845
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2196063950774887 5.0152e-08  
a 3.077898077240814 2.0978e-08 au
q 2.401971976082025 1.5942e-07 au
i 6.799546621176352 4.2027e-06 deg
node 90.38393009465584 4.8616e-05 deg
peri 304.1491215156606 5.0056e-05 deg
M 341.1196431553597 1.1535e-05 deg
tp 2459303.939753262498
(2021-Mar-30.43975326)
6.3601e-05 TDB
period 1972.330898240961
5.40
2.0164e-05
5.521e-08
d
yr
n .182525153523209 1.866e-09 deg/d
Q 3.753824178399602 2.5584e-08 au
  Orbit Determination Parameters
   # obs. used (total)      437  
   data-arc span      7667 days (20.99 yr)  
   first obs. used      1999-10-20  
   last obs. used      2020-10-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5343  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:57:04  

Additional Information
 Earth MOID = 1.41597 au 
 Jupiter MOID = 1.70926 au 
 T_jup = 3.181 
[ 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 15.63   n/a E2021B55  

187845 (1999 XW109)          Discovered 1999-Dec-04 by CSS at Catalina
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ 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
1901-Jan-18 15:09 00:04 Jupiter 1.89814132187736 1.89813952318311 1.89814312057885 2.59768591743479 2.41981330199566 2415403.131016856 3.76141354062324 228.160176072894 13.081735597429 80.3641090636442 1736637.55897011 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:05 2021-Apr-13 21:57
1910-Sep-05 07:52 00:04 Jupiter 1.74685579769921 1.74685468852876 1.74685690694076 1.21640548449365 0.714054763964229 2418919.827647640 3.51109607823889 927.481896132704 525.516884490912 -63.7178464685309 1352489.26983184 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:05 2021-Apr-13 21:57
1960-Mar-15 07:20 00:02 Jupiter 1.84726228785995 1.84726132685296 1.84726324886914 2.37115153088206 2.16917091731785 2437008.805807095 1.89323815011298 142.426535893289 13.3737792093149 83.4907418249535 1805373.03277545 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:05 2021-Apr-13 21:57
1969-Oct-29 13:51 00:02 Jupiter 1.77832233450656 1.7783215188246 1.77832315021096 1.28040604854247 0.828752750011454 2440524.077015912 1.57866582165864 586.57676551413 305.749874946995 -57.8380402393053 1440391.51606273 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:05 2021-Apr-13 21:57
2019-May-09 05:21 < 00:01 Jupiter 1.79929924611708 1.79929874082367 1.7992997514108 2.17178997950084 1.94297942792413 2458612.722853043 0.32219731031668 91.618084906951 19.4097178898277 81.7590732357064 2039237.22598137 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:05 2021-Apr-13 21:57
2028-Dec-21 06:27 < 00:01 Jupiter 1.81827992356655 1.81827932592007 1.81828052121583 1.3873232385625 0.996489476747787 2462126.769033584 0.556976543036228 280.844389438957 172.282380801438 -66.982548852263 1599767.06700119 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:05 2021-Apr-13 21:57
2078-Jul-02 00:20 00:02 Jupiter 1.75682060754161 1.75681983556668 1.75682137952083 2.00507699511348 1.74816081992043 2480216.514100058 2.01726095140152 189.947435154092 38.4793136635899 -87.0472112932043 1629319.60949437 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:05 2021-Apr-13 21:57
2088-Feb-13 01:39 00:02 Jupiter 1.8649123180049 1.86491121590282 1.8649134201234 1.53787813612771 1.20693468012722 2483729.569045207 2.46637859009234 396.340226311688 84.5542575282726 -75.4545973421 1787793.03502175 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:05 2021-Apr-13 21:57
2137-Aug-27 07:24 00:04 Jupiter 1.72212130764906 1.72212026473507 1.72212235058037 1.87280050514402 1.588611043216 2501821.808371039 3.90549208649465 340.625951145293 58.8134371127842 -81.0291720255581 1502550.63073203 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:05 2021-Apr-13 21:57
2147-Apr-09 14:17 00:04 Jupiter 1.91578788808876 1.91578590721057 1.91578986900038 1.72640598928092 1.44783377433808 2505334.094840353 4.41772494758159 507.885105535124 39.6181589500921 -77.9165814836422 1943391.73324776 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:05 2021-Apr-13 21:57
2196-Oct-24 01:29 00:06 Jupiter 1.69640274838326 1.69640169249071 1.69640380430938 1.77252831589413 1.46398308368198 2523429.561937204 5.77606219828905 475.211632814533 81.9663517786311 -76.1170274091336 1411009.2168305 T 18 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:05 2021-Apr-13 21:57
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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