100 Hekate

100 Hekate
orbit
Discovery
Discovered byJ. C. Watson
Discovery date11 July 1868
Designations
(100) Hekate
Pronunciation/ˈhɛkətiː/[1]
Named after
Hecate
1955 QA
Main belt
AdjectivesHekatean (Hecatæan) /hɛkəˈtiːən/[1]
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc144.93 yr (52936 d)
Aphelion3.61005 AU (540.056 Gm)
Perihelion2.56919 AU (384.345 Gm)
3.08962 AU (462.201 Gm)
Eccentricity0.16844
5.43 yr (1983.6 d)
64.6430°
0° 10m 53.357s / day
Inclination6.42957°
127.199°
184.736°
Earth MOID1.55453 AU (232.554 Gm)
Jupiter MOID1.66378 AU (248.898 Gm)
TJupiter3.194
Physical characteristics
Dimensions88.66±2.0 km[2]
89 km[3]
Mass~1.0×1018 kg
Mean density
~2.7 g/cm3 (estimate)[4]
Equatorial surface gravity
~0.033 m/s2
Equatorial escape velocity
~0.054 km/s
27.066 h (1.1278 d)[2]
0.5555 d[5]
0.1922±0.009[2]
0.192[3]
Temperature~154 K
max: 238K (-35°C)
S-type asteroid
7.67

100 Hekate is a large main-belt asteroid.

  1. ^ a b "Hecate". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  2. ^ a b c d Cite error: The named reference JPL was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference IRAS was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Krasinsky02 was invoked but never defined (see the help page).
  5. ^ "Asteroid Lightcurve Parameters".