1058 Grubba

1058 Grubba
Modelled shape of Grubba from its lightcurve
Discovery[1]
Discovered byG. Shajn
Discovery siteSimeiz Obs.
Discovery date22 June 1925
Designations
(1058) Grubba
Named after
Howard Grubb[2][3]
(Irish telescope maker)
1925 MA · 1932 WO
1955 YH · A906 VG
main-belt[1][3] · (inner)
Flora[4][5] · Augusta[6]
Orbital characteristics[3]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc111.28 yr (40,646 d)
Aphelion2.6082 AU
Perihelion1.7842 AU
2.1962 AU
Eccentricity0.1876
3.25 yr (1,189 d)
149.50°
0° 18m 10.08s / day
Inclination3.6932°
221.75°
94.490°
Physical characteristics
10.920±0.057 km[7]
11.910±0.270 km[8]
13.03±0.28 km[9]
14.64 km (derived)[4]
>12 h[10]
>18 h[11]
>20 h[10]
46.30±0.01 h[12]
0.133[13]
0.171±0.008[9]
0.201±0.020[8]
0.2416±0.0245[7]
Tholen = S[3]
SMASS = S[3][4]
B–V = 0.880[3]
U–B = 0.500[3]
11.82±0.20[14]
11.98[3][4][7][8][9]

1058 Grubba, provisional designation 1925 MA, is a stony Flora asteroid from the inner regions of the asteroid belt. It was discovered on 22 June 1925, by Soviet–Russian astronomer Grigory Shajn at the Simeiz Observatory on the Crimean peninsula.[1] The S-type asteroid was named for Irish telescope maker Howard Grubb.[2] It has a longer-than average rotation period of 46.30 hours and measures approximately 12 kilometers (7.5 miles) in diameter.[4]

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  7. ^ a b c Cite error: The named reference WISE was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference Masiero-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. ^ a b Cite error: The named reference geneva-obs was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Vesely-1985 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Ferrero-2014a was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Morrison-1979 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).