4209 Briggs

4209 Briggs
Discovery [1]
Discovered byE. Helin
Discovery sitePalomar Obs.
Discovery date4 October 1986
Designations
(4209) Briggs
Named after
Geoffrey A. Briggs
(American space physicist)[2][3]
1986 TG4 · 1969 SB
1978 EL8 · 1986 WD5
1989 CO4
main-belt · (outer) [4]
Alauda [5]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc47.53 yr (17,360 days)
Aphelion3.4213 AU
Perihelion2.8916 AU
3.1565 AU
Eccentricity0.0839
5.61 yr (2,048 days)
195.76°
0° 10m 32.88s / day
Inclination21.614°
330.37°
12.512°
Physical characteristics
Dimensions25.39 km (derived)[4]
25.63±2.3 km (IRAS:2)[6]
28.92±0.71 km[7]
29.62±0.61 km[8]
30.895±0.239 km[9]
31.303±0.128[10]
12.22±0.02 h[11]
12.235±0.01 h[12]
12.2530±0.0005 h[13]
0.067±0.013[8]
0.0827 (derived)[4]
0.0889±0.0256[9]
0.093±0.012[10]
0.103±0.006[7]
0.1288±0.026 (IRAS:2)[6]
C [4]
10.8[6][7][9] · 11.20[8] · 11.3[1][4] · 11.57±0.42[14]

4209 Briggs, provisional designation 1986 TG4, is a carbonaceous Alauda asteroid from the outer region of the asteroid belt, approximately 28 kilometers in diameter. It was discovered on 4 October 1986, by American astronomer Eleanor Helin at the Palomar Observatory in California, United States.[15] The asteroid was named after American space physicist Geoffrey A. Briggs.[2]

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  2. ^ a b Cite error: The named reference springer was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Astronautix-Briggs was invoked but never defined (see the help page).
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  6. ^ a b c Cite error: The named reference SIMPS was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference AKARI was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference Masiero-2012 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference WISE was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Masiero-2014 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Warner-2011j was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Warner-2004a was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Hanus-2013c was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference MPC-Briggs was invoked but never defined (see the help page).