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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 ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .128970318347441 1.5494e-08  
a 3.152544517761191 1.1355e-08 au
q 2.74595984770105 4.6984e-08 au
i 1.253015613025422 8.0369e-07 deg
node 29.34120435182689 2.9488e-05 deg
peri 131.9935251813452 3.2787e-05 deg
M 42.71896467419015 7.3665e-06 deg
tp 2459153.890117841299
(2020-Oct-31.39011784)
4.1653e-05 TDB
period 2044.514848223859
5.60
1.1046e-05
3.024e-08
d
yr
n .1760808928889631 9.5128e-10 deg/d
Q 3.559129187821331 1.2819e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3733  
   data-arc span      41440 days (113.46 yr)  
   first obs. used      1908-01-13  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42882  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:51:52  

Additional Information
 Earth MOID = 1.75532 au 
 Jupiter MOID = 1.4181 au 
 T_jup = 3.194 
[ 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 10.93   n/a E2021B10  
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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