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18549 (1997 AD13)
Classification: Main-belt Asteroid          SPK-ID: 2018549
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2474140799130479 3.5567e-08  
a 2.595537524270112 1.2306e-08 au
q 1.953364995823032 9.3535e-08 au
i 12.16933585601308 3.4731e-06 deg
node 93.36709792212056 2.1244e-05 deg
peri 126.1006670497974 2.2865e-05 deg
M 192.8655738402543 1.1416e-05 deg
tp 2459909.592364018014
(2022-Nov-26.09236402)
5.1425e-05 TDB
period 1527.352903359941
4.18
1.0863e-05
2.974e-08
d
yr
n .2357019122483451 1.6763e-09 deg/d
Q 3.237710052717192 1.5351e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2050  
   data-arc span      24070 days (65.90 yr)  
   first obs. used      1955-02-24  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4352  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:38:47  

Additional Information
 Earth MOID = .970057 au 
 Jupiter MOID = 1.84252 au 
 T_jup = 3.343 
[ 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 13.4   n/a MPO350950  
diameter diameter 5.125 km 0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.190   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

18549 (1997 AD13)          Discovered 1997-Jan-11 by Kobayashi, T. at Oizumi
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 AD13 = 1977 QL5 = 1991 VU6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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