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19109 (1981 EZ23)
Classification: Main-belt Asteroid          SPK-ID: 2019109
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06084737285646628 6.7655e-08  
a 2.628515597633783 1.9086e-08 au
q 2.468577329005523 1.8454e-07 au
i 2.915282778166106 6.7474e-06 deg
node 210.3971258940922 9.354e-05 deg
peri 18.39748371083834 0.00010688 deg
M 26.62103060900314 5.6349e-05 deg
tp 2458885.397003836042
(2020-Feb-05.89700384)
0.00024302 TDB
period 1556.554260713368
4.26
1.6953e-05
4.641e-08
d
yr
n .2312800838918473 2.519e-09 deg/d
Q 2.788453866262043 2.0247e-08 au
  Orbit Determination Parameters
   # obs. used (total)      520  
   data-arc span      15344 days (42.01 yr)  
   first obs. used      1977-04-24  
   last obs. used      2019-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59327  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:41:44  

Additional Information
 Earth MOID = 1.45854 au 
 Jupiter MOID = 2.18734 au 
 T_jup = 3.397 
[ 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 15.9   n/a MPO467920  
diameter diameter 3.758 km 1.841 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.031   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19109 (1981 EZ23)          Discovered 1981-Mar-07 by Bus, S. J. at Siding Spring
Reference: 20001211/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
1965-Apr-30 13:34 00:01 Iris 0.04789443600516 0.0478860568317212 0.0479028153951339 5.67907375948709 5.67907373835169 2438881.065544537 1.15472338270644 448.600494940284 78.6703140855554 -21.728456243799 36825.8293899554 T 18 CATAB v2.0f-lin.ifort 2020-Feb-22 22:42:03 2020-Feb-22 22:42
2002-Apr-13 17:52 < 00:01 Juno 0.0394776726405563 0.0394761484631787 0.0394791968316674 6.78343358911763 6.78343354368741 2452378.244410475 0.337317734703742 98.888548815727 61.9020397051073 55.1610594963365 85383.8453346427 T 18 CATAB v2.0f-lin.ifort 2020-Feb-22 22:42:03 2020-Feb-22 22:42
2157-Jan-21 04:19 00:04 Iris 0.042900548496841 0.0428715747099805 0.042929522297638 5.68077117223589 5.68077114864725 2508908.679863720 3.7203385493909 1445.01539439271 78.7193013118911 -1.58759390034315 4979.30518422898 T 18 CATAB v2.0f-lin.ifort 2020-Feb-22 22:42:03 2020-Feb-22 22:42
2178-Jul-03 03:33 00:02 Eunom 0.039886756921927 0.0398580199642729 0.0399155021444204 6.13979252122291 6.13979246390221 2516741.647678608 1.69286003763141 1695.08442584015 65.5901321551847 -32.3372046056788 48729.5190590272 T 18 CATAB v2.0f-lin.ifort 2020-Feb-22 22:42:03 2020-Feb-22 22:42
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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