101 Helena
101 Helena is a rocky main-belt asteroid. It was discovered by Canadian-American astronomer J. C. Watson on August 15, 1868, and was named after Helen of Troy in Greek mythology. Radar observations were made of this object on Oct 7 and 19, 2001 from the Arecibo Observatory. Analysis of the data gave an estimated ellipsoidal diameter of 71×63×63 ± 16% km. The diameter estimated from IRAS infrared measurements is 66 km. It is classified as an S-type asteroid in the Tholen system.
101 Helena
101 Helena is a rocky main-belt asteroid. It was discovered by Canadian-American astronomer J. C. Watson on August 15, 1868, and was named after Helen of Troy in Greek mythology. Radar observations were made of this object on Oct 7 and 19, 2001 from the Arecibo Observatory. Analysis of the data gave an estimated ellipsoidal diameter of 71×63×63 ± 16% km. The diameter estimated from IRAS infrared measurements is 66 km. It is classified as an S-type asteroid in the Tholen system.
apoapsis (km)
4.40724302954442E8
average speed (km/s)
density (μ3)
mass (kg)
orbital period (μ)
periapsis (km)
3.32635353437571E8
temperature (K)
absolute magnitude
has abstract
(101) Helena es un asteroide p ...... sonaje de la mitología griega.
@es
(101) Helena ist ein Asteroid ...... r Asteroid am 15. August 1868.
@de
(101) Helena – planetoida występująca w pasie głównym planetoid.
@pl
(101) Hélène, désignation inte ...... nture principale d'astéroïdes.
@fr
(101) Елена (лат. Helena) — ас ...... Солнечной системе
*
*
@ru
101 Helena (in italiano 101 El ...... eca, figlia di Zeus e di Leda.
@it
101 Helena is a rocky main-bel ...... asteroid in the Tholen system.
@en
101 Helena é um pequeno astero ...... de Troia, na mitologia grega.
@pt
ヘレナ (101 Helena) は、小惑星帯に位置する小惑 ...... トロイア戦争の原因となった美女、ヘレネにちなんで命名された。
@ja
小行星101(101 Helena)是一顆體積頗大的小行星帶 ...... 這是與天文学相關的小作品。你可以通过编辑或修订扩充其内容。
@zh
apoapsis (μ)
4.4072430295e+11
average speed (kmh)
density (μ3)
discovery date
1868-08-15
epoch
31 July 2016 (JD2457600.5)
escape velocity (kmh)
mass (g)
orbital period (s)
1.3114656e+8
periapsis (μ)
3.3263535344e+11
rotation period (s)
temperature (K)
Wikipage page ID
Wikipage revision ID
738,567,873
arg peri
asc node
3.43419e+2
background
eccentricity
inclination
1.01976e+1
mean anomaly
2.36265e+2
mean motion
minorplanet
mp category
observation arc
4.578061031999999E9
surface grav
tisserand
uncertainty
subject
comment
(101) Helena es un asteroide p ...... sonaje de la mitología griega.
@es
(101) Helena ist ein Asteroid ...... r Asteroid am 15. August 1868.
@de
(101) Helena – planetoida występująca w pasie głównym planetoid.
@pl
(101) Hélène, désignation inte ...... nture principale d'astéroïdes.
@fr
(101) Елена (лат. Helena) — ас ...... Солнечной системе
*
*
@ru
101 Helena (in italiano 101 El ...... eca, figlia di Zeus e di Leda.
@it
101 Helena is a rocky main-bel ...... asteroid in the Tholen system.
@en
101 Helena é um pequeno astero ...... de Troia, na mitologia grega.
@pt
ヘレナ (101 Helena) は、小惑星帯に位置する小惑 ...... トロイア戦争の原因となった美女、ヘレネにちなんで命名された。
@ja
小行星101(101 Helena)是一顆體積頗大的小行星帶 ...... 這是與天文学相關的小作品。你可以通过编辑或修订扩充其内容。
@zh
label
(101) Helena
@de
(101) Helena
@es
(101) Helena
@pl
(101) Hélène
@fr
(101) Елена
@ru
101 Helena
@en
101 Helena
@it
101 Helena
@pt
ヘレナ (小惑星)
@ja
拐神星
@zh
sameAs
wasDerivedFrom
isPrimaryTopicOf
name
101 Helena
@en