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16621 (1993 FA84)
Classification: Main-belt Asteroid          SPK-ID: 2016621
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1649579999961412 4.8491e-08  
a 2.759226785147293 1.5517e-08 au
q 2.304070253133613 1.3785e-07 au
i 9.769877399343036 4.6662e-06 deg
node 46.83198090631961 3.0608e-05 deg
peri 290.6706843052663 3.3028e-05 deg
M 242.7029841542687 1.4279e-05 deg
tp 2459745.961352993465
(2022-Jun-15.46135299)
6.7751e-05 TDB
period 1674.092777738758
4.58
1.4122e-05
3.866e-08
d
yr
n .2150418452233344 1.814e-09 deg/d
Q 3.214383317160973 1.8076e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1286  
   data-arc span      14381 days (39.37 yr)  
   first obs. used      1981-10-30  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51863  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:36:57  

Additional Information
 Earth MOID = 1.31594 au 
 Jupiter MOID = 2.26015 au 
 T_jup = 3.301 
[ 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 14.03   n/a E2021B10  
diameter diameter 4.034 km 0.595 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.326 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.299   0.178 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16621 (1993 FA84)          Discovered 1993-Mar-23 by UESAC at La Silla
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1993 FA84 = 1981 UP2 = 1998 KW18 = 1999 RO236 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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