1473 Ounas

1473 Ounas
Discovery[1]
Discovered byY. Väisälä
Discovery siteTurku Obs.
Discovery date22 October 1938
Designations
(1473) Ounas
Named after
Ounasjoki River
(in Finland)[2]
1938 UT · 1950 NZ
1950 PB1
main-belt · (middle)[3]
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc77.90 yr (28,452 days)
Aphelion3.1862 AU
Perihelion1.9623 AU
2.5743 AU
Eccentricity0.2377
4.13 yr (1,509 days)
19.843°
0° 14m 18.96s / day
Inclination13.651°
216.52°
129.42°
Physical characteristics
Dimensions17.62 km (derived)[3]
18.164±0.109[4]
20.032 km (dated)[5]
16 h (dated)[3]
139.1±0.1 h[6]
139.1±0.5 h[7]
0.0841 (dated)[5]
0.110±0.018[4]
0.1189 (derived)[3]
S[3]
11.67±0.32[8] · 11.7[1][3] · 11.8[5]

1473 Ounas, provisional designation 1938 UT, is a stony asteroid, suspected tumbler and a slow rotator from the middle region of the asteroid belt, approximately 18 kilometers in diameter. It was discovered on 22 October 1938, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland.[9] The asteroid was named after the Finnish Ounas river.[2]

  1. ^ a b c Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference springer was invoked but never defined (see the help page).
  3. ^ a b c d e f Cite error: The named reference lcdb was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Masiero-2014 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference WISE was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Pilcher-2013f was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference geneva-obs was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference MPC-Ounas was invoked but never defined (see the help page).