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70966 (1999 XD18)
Classification: Main-belt Asteroid          SPK-ID: 2070966
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 .09091570624845458 7.3561e-08  
a 2.579368056557049 1.5411e-08 au
q 2.344862988020461 1.8513e-07 au
i 15.89013521740542 7.8181e-06 deg
node 32.44504022320878 1.7164e-05 deg
peri 18.2529453138679 3.3812e-05 deg
M 320.1292515147003 2.8593e-05 deg
tp 2459168.079268546003
(2020-Nov-14.57926855)
0.00012021 TDB
period 1513.102687269696
4.14
1.356e-05
3.713e-08
d
yr
n .2379217240368522 2.1322e-09 deg/d
Q 2.813873125093638 1.6812e-08 au
  Orbit Determination Parameters
   # obs. used (total)      861  
   data-arc span      11494 days (31.47 yr)  
   first obs. used      1989-04-03  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54669  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 18:41:08  

Additional Information
 Earth MOID = 1.35759 au 
 Jupiter MOID = 2.57604 au 
 T_jup = 3.366 
[ 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 14.6   n/a MPO319896  
diameter diameter 3.123 km 0.532 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.315   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70966 (1999 XD18)          Discovered 1999-Dec-03 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ 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
1966-Dec-31 18:33 00:01 Amphi 0.0458040714949464 0.0457954904390283 0.0458126530123412 4.05642679961753 4.05642676867718 2439491.272768387 1.4061778702456 485.568782787428 34.1123623608549 28.3334523980306 96089.2826686009 T 20 CATAB v2.0f-lin.ifort 2020-Oct-22 18:41:24 2020-Oct-22 18:41

Alternate Designations
 1999 XD18 = 1989 GQ5 = 2001 CG34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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