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58196 Ashleyess (1992 EC1)
Classification: Main-belt Asteroid          SPK-ID: 2058196
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2617268431565035 5.3938e-08  
a 2.578066019203463 1.7919e-08 au
q 1.903316938548287 1.3531e-07 au
i 26.04633720327351 8.8567e-06 deg
node 190.7344040069983 1.0456e-05 deg
peri 320.2131688416184 2.0218e-05 deg
M 306.6718440963944 1.8312e-05 deg
tp 2459224.471905016556
(2021-Jan-09.97190502)
7.7944e-05 TDB
period 1511.957134833323
4.14
1.5763e-05
4.316e-08
d
yr
n .2381019882813584 2.4824e-09 deg/d
Q 3.252815099858639 2.2609e-08 au
  Orbit Determination Parameters
   # obs. used (total)      686  
   data-arc span      10192 days (27.90 yr)  
   first obs. used      1992-02-11  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52882  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 09:39:00  

Additional Information
 Earth MOID = .955693 au 
 Jupiter MOID = 1.88897 au 
 T_jup = 3.239 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457107.5 (2015-Mar-26.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2616778654221802 5.4273e-08  
q 1.903591346294867 1.3627e-07 au
tp 2457713.706925426449
(2016-Nov-21.20692543)
7.1993e-05 TDB
node 190.7415962706279 1.0451e-05 deg
peri 320.3575993299935 2.0155e-05 deg
i 26.05075183433575 8.8572e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      686  
   data-arc span      10192 days (27.90 yr)  
   first obs. used      1992-02-11  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52882  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 09:39:00  

Additional Information
 Jupiter MOID = 1.88897 au 
 T_jup = 3.239 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.945593082913185E-15 -7.364499955761754E-15 2.663773695313414E-12 -1.042642629293521E-14 6.804867401436065E-13 4.363652874209907E-15
q -7.364499955761754E-15 1.85701015718908E-14 -6.616866924976012E-12 2.22830673635229E-14 -1.704774190449709E-12 -1.34429437968645E-14
tp 2.663773695313414E-12 -6.616866924976012E-12 5.182985686966119E-9 -1.95347146751187E-11 1.254507657788259E-9 5.647392376603756E-12
node -1.042642629293521E-14 2.22830673635229E-14 -1.95347146751187E-11 1.092326633768626E-10 -1.021939736298023E-10 4.3915276387031E-11
peri 6.804867401436065E-13 -1.704774190449709E-12 1.254507657788259E-9 -1.021939736298023E-10 4.06237376703054E-10 -3.803231618202375E-11
i 4.363652874209907E-15 -1.34429437968645E-14 5.647392376603756E-12 4.3915276387031E-11 -3.803231618202375E-11 7.845074100720371E-11

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 15.1   n/a MPO359140  
diameter diameter 4.996 km 1.164 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58196 Ashleyess           Discovered 1992 Mar. 10 by D. I. Steel at Siding Spring.
Ashley Caroline Steel (b. 1959) is the discoverer's youngest sister. A businesswoman who lives in London, she has been very supportive of the discoverer's career.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080520/MPCPages.arcLast Updated: 2008-05-22

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