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18543 (1997 AE)
Classification: Main-belt Asteroid          SPK-ID: 2018543
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1248313057141655 4.2147e-08  
a 2.71871716560584 1.3861e-08 au
q 2.379336151955747 1.1591e-07 au
i 7.467625795237364 4.7949e-06 deg
node 311.4129018124323 3.0209e-05 deg
peri 358.1214884421383 3.4623e-05 deg
M 236.499396060877 1.6634e-05 deg
tp 2459562.208571859366
(2021-Dec-13.70857186)
7.5535e-05 TDB
period 1637.361109335541
4.48
1.2522e-05
3.428e-08
d
yr
n .2198659769964195 1.6815e-09 deg/d
Q 3.058098179255932 1.5592e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1972  
   data-arc span      8402 days (23.00 yr)  
   first obs. used      1997-01-02  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45958  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 00:48:30  

Additional Information
 Earth MOID = 1.36481 au 
 Jupiter MOID = 2.1945 au 
 T_jup = 3.336 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456323.5 (2013-Jan-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1255476028026945 4.2115e-08  
q 2.376945150735619 1.1586e-07 au
tp 2456278.832696778653
(2012-Dec-17.33269678)
7.8595e-05 TDB
node 311.4981729531976 3.0152e-05 deg
peri 356.5466667556395 3.4529e-05 deg
i 7.477200490927514 4.7957e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1972  
   data-arc span      8402 days (23.00 yr)  
   first obs. used      1997-01-02  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45958  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 00:48:30  

Additional Information
 Jupiter MOID = 2.1945 au 
 T_jup = 3.336 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.773646347032306E-15 -4.853537051748711E-15 8.882779423853542E-13 4.780161092042115E-15 1.861015720800735E-13 4.943198460587478E-16
q -4.853537051748711E-15 1.342248166138E-14 -2.683294164884909E-12 -1.275175388894561E-14 -5.621633444745181E-13 -9.916428650664946E-16
tp 8.882779423853542E-13 -2.683294164884909E-12 6.177134310273775E-9 -8.188596977433274E-12 1.33876593598254E-9 -5.537699464654379E-13
node 4.780161092042115E-15 -1.275175388894561E-14 -8.188596977433274E-12 9.091394228388569E-10 -9.027162829601091E-10 3.104716632523051E-11
peri 1.861015720800735E-13 -5.621633444745181E-13 1.33876593598254E-9 -9.027162829601091E-10 1.192286025320721E-9 -3.092337011412121E-11
i 4.943198460587478E-16 -9.916428650664946E-16 -5.537699464654379E-13 3.104716632523051E-11 -3.092337011412121E-11 2.299905116594889E-11

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 13.3   n/a MPO337415  
diameter diameter 5.603 km 0.277 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 10.970 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.204   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18543 (1997 AE)          Discovered 1997-Jan-02 by Kobayashi, T. at Oizumi
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 AE = 1998 FS110 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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