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19169 (1991 FD)
Classification: Main-belt Asteroid          SPK-ID: 2019169
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .179162243845061 1.8588e-08  
a 2.349147821405354 9.3094e-09 au
q 1.928269226598634 4.1719e-08 au
i 24.8720552857707 7.5377e-07 deg
node 167.6297276920492 1.1543e-06 deg
peri 359.1450184816901 1.9888e-06 deg
M 110.5902311243019 2.6099e-06 deg
tp 2458796.502934469062
(2019-Nov-09.00293447)
8.0645e-06 TDB
period 1315.115649117926
3.60
7.8174e-06
2.14e-08
d
yr
n .2737401841742656 1.6272e-09 deg/d
Q 2.770026416212074 1.0977e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1779  
   data-arc span      10809 days (29.59 yr)  
   first obs. used      1991-02-16  
   last obs. used      2020-09-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46349  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:47:34  

Additional Information
 Earth MOID = .935052 au 
 Jupiter MOID = 2.20171 au 
 T_jup = 3.414 
[ 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 14.30   n/a E2021B10  
diameter diameter 3.298 km 0.420 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.274   0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

19169 (1991 FD)          Discovered 1991-Mar-17 by Helin, E. F. at Palomar
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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