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19168 (1991 EO5)
Classification: Main-belt Asteroid          SPK-ID: 2019168
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1036354880342912 2.046e-08  
a 3.056754854935058 1.352e-08 au
q 2.739966573742675 6.5372e-08 au
i 10.47173488005184 9.7793e-07 deg
node 167.1613059670757 1.097e-06 deg
peri 220.0845186137262 9.567e-06 deg
M 330.9002766928303 7.7764e-06 deg
tp 2459358.288628620290
(2021-May-23.78862862)
4.2311e-05 TDB
period 1952.042832287301
5.34
1.2951e-05
3.546e-08
d
yr
n .1844221827746325 1.2236e-09 deg/d
Q 3.373543136127442 1.4922e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2032  
   data-arc span      10921 days (29.90 yr)  
   first obs. used      1991-03-14  
   last obs. used      2021-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44046  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:47:33  

Additional Information
 Earth MOID = 1.75096 au 
 Jupiter MOID = 2.11624 au 
 T_jup = 3.202 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457399.5 (2016-Jan-12.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1082286960690034 2.0705e-08  
q 2.725139742304201 6.647e-08 au
tp 2457400.995287900013
(2016-Jan-13.49528790)
3.9059e-05 TDB
node 167.4989472740525 1.0866e-06 deg
peri 219.0494261362617 9.0034e-06 deg
i 10.47009270672356 9.7755e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2032  
   data-arc span      10921 days (29.90 yr)  
   first obs. used      1991-03-14  
   last obs. used      2021-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44046  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:47:33  

Additional Information
 Jupiter MOID = 2.11624 au 
 T_jup = 3.202 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.286972859004762E-16 -1.354577717441688E-15 1.404154646759356E-13 -9.300537162356197E-15 6.343956147020057E-14 -9.304238445561403E-15
q -1.354577717441688E-15 4.418239634214193E-15 -4.960597258914861E-13 3.022321758618998E-14 -2.149003484828477E-13 3.016815748056403E-14
tp 1.404154646759356E-13 -4.960597258914861E-13 1.525582136184447E-9 1.825920307904748E-12 3.442827394255995E-10 7.729756540143685E-12
node -9.300537162356197E-15 3.022321758618998E-14 1.825920307904748E-12 1.180799490679023E-12 -1.082196003556563E-12 5.548632725359194E-13
peri 6.343956147020057E-14 -2.149003484828477E-13 3.442827394255995E-10 -1.082196003556563E-12 8.106073138942646E-11 5.756311617804779E-13
i -9.304238445561403E-15 3.016815748056403E-14 7.729756540143685E-12 5.548632725359194E-13 5.756311617804779E-13 9.556126603653198E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.21   n/a E2021B10  
diameter diameter 7.763 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.203   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19168 (1991 EO5)          Discovered 1991-Mar-14 by Debehogne, H. at La Silla
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 EO5 = 1996 AR18 = 1998 MJ11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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