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JPL Small-Body Database Browser
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305231 (2007 XR18)
Classification: Main-belt Asteroid          SPK-ID: 2305231
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1163121111120457 9.1776e-08  
a 2.710549012244585 3.8471e-08 au
q 2.395279334357747 2.6577e-07 au
i 12.19877072659378 1.042e-05 deg
node 270.1389207494767 4.2978e-05 deg
peri 88.81106244061247 6.5448e-05 deg
M 264.9554275787805 5.0211e-05 deg
tp 2459030.837452175843
(2020-Jun-30.33745218)
0.00023224 TDB
period 1629.987687216067
4.46
3.4702e-05
9.501e-08
d
yr
n .2208605640542359 4.7021e-09 deg/d
Q 3.025818690131423 4.2946e-08 au
  Orbit Determination Parameters
   # obs. used (total)      178  
   data-arc span      5671 days (15.53 yr)  
   first obs. used      2002-10-06  
   last obs. used      2018-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55598  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:02:38  

Additional Information
 Earth MOID = 1.42879 au 
 Jupiter MOID = 2.4434 au 
 T_jup = 3.321 
[ 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 16.0   n/a MPO433966  

305231 (2007 XR18)          Discovered 2007-Dec-13 by OAM at Costitx
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ 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
1939-May-19 07:18 00:27 Iris 0.046421501099224 0.0463742606886673 0.0464687436814333 2.84215521513964 2.84215517156778 2429402.803953018 27.304218855681 2405.3054309083 103.134353356025 -11.9875829043654 14251.6531259384 T 8 CATAB v2.0e-lin.ifort 2019-Jul-14 10:02:40 2019-Jul-14 10:02
2146-Jun-21 23:43 00:04 Europ 0.039182966907033 0.0391500922284436 0.0392161108837149 6.52929858879244 6.52929854724848 2505042.488136603 3.49700647998871 5388.21428904968 100.845146913865 72.2477194566462 55343.7598888929 T 8 CATAB v2.0e-lin.ifort 2019-Jul-14 10:02:40 2019-Jul-14 10:02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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