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21138 (1993 FS24)
Classification: Main-belt Asteroid          SPK-ID: 2021138
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08227974434698776 4.4748e-08  
a 2.620337035303355 1.1658e-08 au
q 2.404736373935651 1.1894e-07 au
i 4.503701635884759 5.1347e-06 deg
node 352.7073428341928 4.3669e-05 deg
peri 210.5686022495447 5.0924e-05 deg
M 180.2393787726234 2.8957e-05 deg
tp 2459974.117381893525
(2023-Jan-29.61738189)
0.00012701 TDB
period 1549.295143619888
4.24
1.0339e-05
2.831e-08
d
yr
n .2323637310053585 1.5507e-09 deg/d
Q 2.835937696671059 1.2617e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1089  
   data-arc span      10152 days (27.79 yr)  
   first obs. used      1993-03-21  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53621  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:40:22  

Additional Information
 Earth MOID = 1.40192 au 
 Jupiter MOID = 2.12956 au 
 T_jup = 3.396 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.92   n/a E2021B10  
diameter diameter 2.548 km 0.364 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.272   0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21138 (1993 FS24)          Discovered 1993-Mar-21 by UESAC at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1993 FS24 = 1995 WU24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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