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185815 (1999 XH139)
Classification: Main-belt Asteroid          SPK-ID: 2185815
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1729106472693404 6.1168e-08  
a 2.945266878876163 1.5954e-08 au
q 2.435998876468736 1.8386e-07 au
i 8.384346927729544 7.5032e-06 deg
node 25.98425282804038 3.2191e-05 deg
peri 290.223505795402 4.2401e-05 deg
M 75.08541208458041 2.2734e-05 deg
tp 2458615.431072796408
(2019-May-11.93107280)
0.00011706 TDB
period 1846.22831445792
5.05
1.5001e-05
4.107e-08
d
yr
n .1949921346026488 1.5844e-09 deg/d
Q 3.45453488128359 1.8713e-08 au
  Orbit Determination Parameters
   # obs. used (total)      518  
   data-arc span      9134 days (25.01 yr)  
   first obs. used      1994-10-26  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51551  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 20:53:10  

Additional Information
 Earth MOID = 1.43883 au 
 Jupiter MOID = 1.93488 au 
 T_jup = 3.233 
[ 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 15.2   n/a MPO449930  

185815 (1999 XH139)          Discovered 1999-Dec-02 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ 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
1991-Oct-03 11:09 < 00:01 Jupiter 1.98063930722351 1.98063854166391 1.98064007278266 2.37139135937076 2.18361966526653 2448532.964248110 0.630509817883211 95.5807725310498 19.4926275101396 85.8979797137838 1347848.30676398 T 14 CATAB v2.0f-lin.ifort 2019-Nov-07 20:53:27 2019-Nov-07 20:53
2026-Dec-08 21:28 < 00:01 Jupiter 1.94547891896232 1.94547822631827 1.94547961160592 2.07977451163785 1.85868289868808 2461383.394753626 0.593050331300317 83.449976183245 25.6716647244131 -88.2483239239857 1389970.19801975 T 14 CATAB v2.0f-lin.ifort 2019-Nov-07 20:53:27 2019-Nov-07 20:53
2062-Feb-12 02:00 00:01 Jupiter 1.92478086371431 1.92478025596642 1.9247814714622 1.88885350596874 1.63940354498391 2474232.583385951 1.48327555769155 97.2528895405748 35.818289264484 -89.5120615887995 1858063.81572743 T 14 CATAB v2.0f-lin.ifort 2019-Nov-07 20:53:27 2019-Nov-07 20:53
2097-Apr-18 07:13 00:02 Jupiter 1.9308889979718 1.93088837481113 1.93088962113236 1.90521612373947 1.65906873250177 2487081.800851612 2.49006544285209 127.537099230115 18.452292149339 -77.7793388042396 2395301.18123322 T 14 CATAB v2.0f-lin.ifort 2019-Nov-07 20:53:27 2019-Nov-07 20:53
2132-Jun-21 15:02 00:04 Jupiter 1.95378351616019 1.95378264218522 1.95378439013439 2.15974229083072 1.94869906459907 2499929.126360366 3.51788946436286 123.62988364001 8.77524010616807 -66.917524388464 1209280.45213628 T 14 CATAB v2.0f-lin.ifort 2019-Nov-07 20:53:27 2019-Nov-07 20:53
2167-Aug-23 07:00 00:04 Jupiter 1.99444774734911 1.99444641035082 1.99444908434593 2.63933157501587 2.47319442411851 2512774.791714491 4.48131797150467 90.9390560241813 11.1791774104695 -74.6524640261302 659855.932174345 T 14 CATAB v2.0f-lin.ifort 2019-Nov-07 20:53:27 2019-Nov-07 20:53

Alternate Designations
 1999 XH139 = 1994 UC3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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