1541 Estonia

1541 Estonia
Discovery[1]
Discovered byY. Väisälä
Discovery siteTurku Obs.
Discovery date12 February 1939
Designations
(1541) Estonia
Named after
Estonia[2]
(Baltic country)
1939 CK · 1930 FE
1930 FV · 1950 RG1
1950 SR · 1959 RF1
A916 GE · A923 VE
main-belt · (middle)
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc93.57 yr (34,176 days)
Aphelion2.9610 AU
Perihelion2.5761 AU
2.7685 AU
Eccentricity0.0695
4.61 yr (1,683 days)
346.22°
0° 12m 50.4s / day
Inclination4.8750°
1.4553°
192.84°
Physical characteristics
Dimensions19.53±0.40 km[3]
20.15 km (derived)[4]
20.56±6.71 km[5]
22.000±0.342 km[6]
23.89±1.35 km[7]
24.542±0.096 km[8]
10.1±1.0 h[9]
0.0976±0.0129[8]
0.104±0.012[7]
0.12±0.13[5]
0.1314 (derived)[4]
0.140±0.016[3]
SMASS = Xc[1] · X[4]
11.20[7][8] · 11.30[4][3][5] · 11.4[1] · 11.56±0.24[10]

1541 Estonia, provisional designation 1939 CK, is an asteroid from the central regions of the asteroid belt, approximately 21 kilometers in diameter. It was discovered on 12 February 1939, by astronomer Yrjö Väisälä at the Iso-Heikkilä Observatory near Turku, Finland.[11] The asteroid was named after the Baltic country of Estonia.[2]

  1. ^ a b c d 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 Cite error: The named reference Masiero-2012 was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference lcdb was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Nugent-2015 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Masiero-2014 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 WISE was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference geneva-obs was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference MPC-object was invoked but never defined (see the help page).