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1027 Aesculapia (A923 YO11)
Classification: Main-belt Asteroid          SPK-ID: 2001027
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .128970318369069 1.5493e-08  
a 3.152544517492141 1.1324e-08 au
q 2.745959847398517 4.6965e-08 au
i 1.253015617608776 8.0364e-07 deg
node 29.34120443418241 2.9476e-05 deg
peri 131.9935250712798 3.2775e-05 deg
M 42.71896475163242 7.3638e-06 deg
tp 2459153.890117432546
(2020-Oct-31.39011743)
4.164e-05 TDB
period 2044.514847962129
5.60
1.1016e-05
3.016e-08
d
yr
n .1760808929115042 9.4875e-10 deg/d
Q 3.559129187585766 1.2785e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3790  
   data-arc span      41477 days (113.56 yr)  
   first obs. used      1908-01-13  
   last obs. used      2021-08-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42678  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:15:42  

Additional Information
 Earth MOID = 1.75532 au 
 Jupiter MOID = 1.4181 au 
 T_jup = 3.194 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456785.5 (2014-May-08.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1316246327552906 1.5266e-08  
q 2.738265311038218 4.6623e-08 au
tp 2457112.189936851181
(2015-Mar-30.68993685)
4.0905e-05 TDB
node 29.41207529837533 2.9498e-05 deg
peri 132.6438121887132 3.2694e-05 deg
i 1.253807653713372 8.0343e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3790  
   data-arc span      41477 days (113.56 yr)  
   first obs. used      1908-01-13  
   last obs. used      2021-08-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42678  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:15:42  

Additional Information
 Jupiter MOID = 1.4181 au 
 T_jup = 3.194 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.330441026985234E-16 -6.971632236274712E-16 -2.878206879145223E-13 -1.15812884707481E-13 4.947359775235956E-14 2.084049439947791E-15
q -6.971632236274712E-16 2.173720996624575E-15 8.590568670757996E-13 3.791325051579322E-13 -1.807380848375438E-13 -6.742483964813596E-15
tp -2.878206879145223E-13 8.590568670757996E-13 1.673191399452853E-9 -2.529305436116788E-10 6.190577323954643E-10 3.821270448332514E-12
node -1.15812884707481E-13 3.791325051579322E-13 -2.529305436116788E-10 8.701150995562872E-10 -9.290744097891133E-10 9.424850881292194E-12
peri 4.947359775235956E-14 -1.807380848375438E-13 6.190577323954643E-10 -9.290744097891133E-10 1.068901150819113E-9 -8.564086593241191E-12
i 2.084049439947791E-15 -6.742483964813596E-15 3.821270448332514E-12 9.424850881292194E-12 -8.564086593241191E-12 6.45492020874074E-13

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 10.94   n/a MPO636076  
diameter diameter 31.225 km 0.164 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 13.529 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Hess, K.; Bruner, M.; Ditteon, R. (2017) Minor Planet Bull. 44, 3-5.]
geometric albedo albedo 0.129   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1027 Aesculapia (A923 YO11)          Discovered 1923-Nov-11 by Van Biesbroeck, G. at Williams Bay
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A923 YO11 = 1942 DH = 1977 LP1 = A899 PE = A908 AE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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