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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1293375581629867 3.7609e-08  
a 3.153914717860101 1.362e-08 au
q 2.74599508959777 1.2075e-07 au
i 1.252909371507742 4.0889e-06 deg
node 29.34659724485043 0.0001672 deg
peri 132.0743694547368 0.00016778 deg
M 332.9416365464653 1.4828e-05 deg
tp 2459154.270267831397
(2020-Oct-31.77026783)
8.4582e-05 TDB
period 2045.847913690862
5.60
1.3253e-05
3.628e-08
d
yr
n .1759661593566519 1.1399e-09 deg/d
Q 3.561834346122431 1.5382e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3157  
   data-arc span      41216 days (112.84 yr)  
   first obs. used      1908-01-13  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4579  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:57:49  

Additional Information
 Earth MOID = 1.75454 au 
 Jupiter MOID = 1.41685 au 
 T_jup = 3.193 
[ 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 10.9   n/a MPO452172  
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

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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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