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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1291690381944604 3.696e-08  
a 3.153371838000989 1.3e-08 au
q 2.746053830616903 1.1799e-07 au
i 1.252972282326216 4.0569e-06 deg
node 29.34175724274135 0.00016436 deg
peri 132.0472341838784 0.00016493 deg
M 8.16037732654512 1.4186e-05 deg
tp 2459154.137276099397
(2020-Oct-31.63727610)
8.0523e-05 TDB
period 2045.319712107399
5.60
1.2648e-05
3.463e-08
d
yr
n .1760116024252626 1.0884e-09 deg/d
Q 3.560689845385074 1.4679e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3299  
   data-arc span      41282 days (113.02 yr)  
   first obs. used      1908-01-13  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44937  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:51:52  

Additional Information
 Earth MOID = 1.75435 au 
 Jupiter MOID = 1.41713 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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