1251 Hedera

1251 Hedera
Modelled shape of Hedera from its lightcurve
Discovery[1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date25 January 1933
Designations
(1251) Hedera
Pronunciation/ˈhɛdərə/[2]
Named after
Hedera (a.k.a. "Ivy")[3]
1933 BE · 1929 CD1
1931 TJ2 · 1975 NW1
A907 GD · A915 CA
main-belt[1][4] · (middle)
background[5]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc102.80 yr (37,548 days)
Aphelion3.1452 AU
Perihelion2.2884 AU
2.7168 AU
Eccentricity0.1577
4.48 yr (1,636 days)
55.862°
0° 13m 12.36s / day
Inclination6.0489°
140.65°
217.52°
Physical characteristics
13.239±0.150 km[6][7]
44.22 km (calculated)[4]
15.015±0.010 h[8]
19.9000±0.0002 h[9]
19.9020±0.0001 h[10]
19.9020±0.0002 h[11]
19.915±0.005 h[12]
19.915±0.007 h[12]
19.985±0.002 h[13]
0.057 (assumed)[4]
0.636±0.050[6][7]
Tholen = E[1]
SMASS = X[1]
E[7][14] · C(SDSS-MFB)[4]
B–V = 0.689[1]
U–B = 0.233[1]
10.5[1][4][7] · 10.67±0.28[15]

1251 Hedera (prov. designation: 1933 BE) is a background asteroid from the central regions of the asteroid belt, approximately 13 kilometers (8 miles) in diameter. It was discovered on 25 January 1933, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany.[16] The asteroid was named for the climbing plant Hedera, commonly known as "ivy".[3]

  1. ^ a b c d e f g h Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ "hederal". 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. ^ Cite error: The named reference AstDys-object was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Masiero-2011 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference WISE was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Shevchenko-2003 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Oey-2008b was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Durech-2016 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Durech-2017b was invoked but never defined (see the help page).
  12. ^ a b Cite error: The named reference geneva-obs was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Chiorny-2007 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Belskaya-2017 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference MPC-object was invoked but never defined (see the help page).