1757 Porvoo

1757 Porvoo
Discovery[1]
Discovered byY. Väisälä
Discovery siteTurku Obs.
Discovery date17 March 1939
Designations
(1757) Porvoo
Named after
Porvoo (Finnish city)[2]
1939 FC · 1964 BB
1968 FK
main-belt · (inner) [3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc77.87 yr (28,442 days)
Aphelion2.6478 AU
Perihelion2.0551 AU
2.3514 AU
Eccentricity0.1260
3.61 yr (1,317 days)
263.06°
0° 16m 23.88s / day
Inclination3.9765°
39.423°
149.40°
Physical characteristics
Dimensions6.32 km (calculated)[3]
10.03±2.85 km[4]
12.81±0.45 km[5]
4.89 h[6]
0.049±0.004[5]
0.072±0.097[4]
0.073±0.082
0.20 (assumed)[3]
S[3]
13.36[1][3][5] · 13.47[4] · 13.49±0.26[7]

1757 Porvoo, provisional designation 1939 FC, is a presumably stony asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 17 March 1939, by Finnish astronomer Yrjö Väisälä at Turku Observatory on the coast of southwestern Finland.[8] The asteroid was named for the Finnish city of Porvoo.[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 Cite error: The named reference lcdb was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Masiero-2012 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference AKARI was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Binzel-1983b was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference MPC-Porvoo was invoked but never defined (see the help page).