27 Euterpe

27 Euterpe
Lightcurve-based 3D-model of Euterpe
Discovery [1]
Discovered byJ. R. Hind
Discovery siteGeorge Bishop's Obs.
Discovery date8 November 1853
Designations
(27) Euterpe
Pronunciation/juːˈtɜːrpiː/[2]
Named after
Euterpe (Greek mythology)[3]
1945 KB
main-belt · (inner) [4]
Euterpe [5]
AdjectivesEuterpean /juːˈtɜːrpiən/[6]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc163.48 yr (59,711 days)
Aphelion2.7524 AU
Perihelion1.9401 AU
2.3463 AU
Eccentricity0.1731
3.59 yr (1,313 days)
170.66°
0° 16m 27.12s / day
Inclination1.5837°
94.789°
356.55°
Physical characteristics
Dimensions124 × 75 km (occultation)[1]
96 km[1]
96.9 km[7]
105.80±7.23 km[8]
109.79±1.54 km[9]
118 km[10]
118.000±22.30 km[11]
Mass(1.67±1.01)×1018 kg[8]
Mean density
2.69±1.71 g/cm3[8]
8.500 h[4]
10.377±0.008 h[12]
10.40193±0.00005 h[13]
10.404±0.001 h[4]
10.407±0.002 h[14]
10.4082±0.0001 h[15]
10.410±0.002 h[16][17][a]
10.41 h[18]
0.20±0.03[19]
0.2011±0.0582[11]
0.215±0.033[20]
0.234±0.008[9]
0.298[7]
Tholen = S [1]
SMASS = S [1] · S [21][4]
B–V = 0.878[1]
U–B = 0.502[1]
7.00[1][4][7][9][11] · 7.01±0.02[15]
0.13" to 0.035"

27 Euterpe is a stony asteroid and parent body of the Euterpe family, located in the inner asteroid belt, approximately 100 kilometers in diameter. It was discovered by English astronomer John Russell Hind at George Bishop's Observatory in London on 8 November 1853. The asteroid was named after Euterpe, the Muse of music in Greek mythology.[3][22]

Euterpe is one of the brightest asteroids in the night sky.[23] It had an apparent magnitude of 8.5 during a perihelic opposition on 25 December 2015 when the asteroid was about 1 AU from Earth.[24] At the end of November 2022 it passed about 1.5 degrees from Uranus while in the constellation of Aries.[25] Based on the S-type spectra the composition appears stony. It has a cross-section size of around 100–120 km. 27 Euterpe is orbiting the Sun with a period of 3.59 years and is spinning on its axis once every 10.4 hours.

It is the parent body of the Euterpe family (410), a stony inner-belt asteroid family of nearly 400 known members.[5][26]: 23  Euterpe has been studied by radar.[27]

  1. ^ a b c d e f g h i Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ "Euterpe". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  3. ^ a b Cite error: The named reference springer was invoked but never defined (see the help page).
  4. ^ a b c d e Cite error: The named reference lcdb was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Ferret was invoked but never defined (see the help page).
  6. ^ "Euterpean". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  7. ^ a b c Cite error: The named reference Shevchenko-2006 was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference Carry-2012 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference AKARI was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Morrison-1979 was invoked but never defined (see the help page).
  11. ^ a b c Cite error: The named reference WISE was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Gandolfi-2009 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Hanus-2016a was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Pilcher-2011c was invoked but never defined (see the help page).
  15. ^ a b Cite error: The named reference Stephens-2012a was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference Stephens-2001a was invoked but never defined (see the help page).
  17. ^ Cite error: The named reference Stephens-2001b was invoked but never defined (see the help page).
  18. ^ Cite error: The named reference geneva-obs was invoked but never defined (see the help page).
  19. ^ Cite error: The named reference Mainzer-2011 was invoked but never defined (see the help page).
  20. ^ Cite error: The named reference Masiero-2014 was invoked but never defined (see the help page).
  21. ^ Cite error: The named reference Belskaya-2017 was invoked but never defined (see the help page).
  22. ^ Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  23. ^ Cite error: The named reference MPC-bright-MPs-2004 was invoked but never defined (see the help page).
  24. ^ Cite error: The named reference Horizons2015 was invoked but never defined (see the help page).
  25. ^ Cite error: The named reference Inthesky2022 was invoked but never defined (see the help page).
  26. ^ Cite error: The named reference Nesvorny-2014 was invoked but never defined (see the help page).
  27. ^ Cite error: The named reference detected was invoked but never defined (see the help page).


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