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19098 (1981 EM3)
Classification: Main-belt Asteroid          SPK-ID: 2019098
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07126251841041005 3.989e-08  
a 2.262717743739981 6.8801e-09 au
q 2.101470778869149 9.1163e-08 au
i 5.834335276664491 4.0435e-06 deg
node 251.9331171277241 3.6519e-05 deg
peri 171.4476100929686 4.4715e-05 deg
M 350.3174370267798 2.5523e-05 deg
tp 2459233.937348380355
(2021-Jan-19.43734838)
8.8143e-05 TDB
period 1243.208585394238
3.40
5.6702e-06
1.552e-08
d
yr
n .2895732898159156 1.3207e-09 deg/d
Q 2.423964708610812 7.3703e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1283  
   data-arc span      14620 days (40.03 yr)  
   first obs. used      1981-02-02  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48659  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:45:40  

Additional Information
 Earth MOID = 1.11428 au 
 Jupiter MOID = 2.77923 au 
 T_jup = 3.608 
[ 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 15.46   n/a E2021B10  

19098 (1981 EM3)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1981 EM3 = 1993 XA1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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