Global Information27 Euterpe information
 Lightcurve-based 3D-model of Euterpe | |
| Discovery [1] | |
|---|---|
| Discovered by | J. R. Hind |
| Discovery site | George Bishop's Obs. |
| Discovery date | 8 November 1853 |
| Designations | |
MPC designation | (27) Euterpe |
| Pronunciation | /juːˈtɜːrpiː/[2] |
Named after | Euterpe (Greek mythology)[3] |
Alternative designations | 1945 KB |
Minor planet category | main-belt · (inner) [4] Euterpe [5] |
| Adjectives | Euterpean /juːˈtɜːrpiən/[6] |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 163.48 yr (59,711 days) |
| Aphelion | 2.7524 AU |
| Perihelion | 1.9401 AU |
Semi-major axis | 2.3463 AU |
| Eccentricity | 0.1731 |
Orbital period (sidereal) | 3.59 yr (1,313 days) |
Mean anomaly | 170.66° |
Mean motion | 0° 16m 27.12s / day |
| Inclination | 1.5837° |
Longitude of ascending node | 94.789° |
Argument of perihelion | 356.55° |
| Physical characteristics | |
| Dimensions | 124 × 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] |
Synodic rotation period | 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] |
Geometric albedo | 0.20±0.03[19] 0.2011±0.0582[11] 0.215±0.033[20] 0.234±0.008[9] 0.298[7] |
Spectral type | Tholen = S [1] SMASS = S [1] · S [21][4] B–V = 0.878[1] U–B = 0.502[1] |
Absolute magnitude (H) | 7.00[1][4][7][9][11] · 7.01±0.02[15] |
Angular diameter | 0.13" to 0.035" |
Euterpe, minor planet designation 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]
- ^ a b c d e f g h i Cite error: The named reference
jpldatawas invoked but never defined (see the help page). - ^ "Euterpe". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- ^ a b Cite error: The named reference
springerwas invoked but never defined (see the help page). - ^ a b c d e Cite error: The named reference
lcdbwas invoked but never defined (see the help page). - ^ a b Cite error: The named reference
Ferretwas invoked but never defined (see the help page). - ^ "Euterpean". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- ^ a b c Cite error: The named reference
Shevchenko-2006was invoked but never defined (see the help page). - ^ a b c Cite error: The named reference
Carry-2012was invoked but never defined (see the help page). - ^ a b c Cite error: The named reference
AKARIwas invoked but never defined (see the help page). - ^ Cite error: The named reference
Morrison-1979was invoked but never defined (see the help page). - ^ a b c Cite error: The named reference
WISEwas invoked but never defined (see the help page). - ^ Cite error: The named reference
Gandolfi-2009was invoked but never defined (see the help page). - ^ Cite error: The named reference
Hanus-2016awas invoked but never defined (see the help page). - ^ Cite error: The named reference
Pilcher-2011cwas invoked but never defined (see the help page). - ^ a b Cite error: The named reference
Stephens-2012awas invoked but never defined (see the help page). - ^ Cite error: The named reference
Stephens-2001awas invoked but never defined (see the help page). - ^ Cite error: The named reference
Stephens-2001bwas invoked but never defined (see the help page). - ^ Cite error: The named reference
geneva-obswas invoked but never defined (see the help page). - ^ Cite error: The named reference
Mainzer-2011was invoked but never defined (see the help page). - ^ Cite error: The named reference
Masiero-2014was invoked but never defined (see the help page). - ^ Cite error: The named reference
Belskaya-2017was invoked but never defined (see the help page). - ^ Cite error: The named reference
MPC-objectwas invoked but never defined (see the help page). - ^ Cite error: The named reference
MPC-bright-MPs-2004was invoked but never defined (see the help page). - ^ Cite error: The named reference
Horizons2015was invoked but never defined (see the help page). - ^ Cite error: The named reference
Inthesky2022was invoked but never defined (see the help page). - ^ Cite error: The named reference
Nesvorny-2014was invoked but never defined (see the help page). - ^ Cite error: The named reference
detectedwas invoked but never defined (see the help page).
Cite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page).