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Discovery[1] | |
---|---|
Discovered by | H. E. Holt |
Discovery site | Palomar Obs. |
Discovery date | 22 August 1990 |
Designations | |
(9948) 1990 QB2 | |
1990 QB2 · 1979 SJ6 1990 SQ26 | |
main-belt[1][2] · (inner)[3] Nysa[4] | |
Orbital characteristics[2] | |
Epoch 23 March 2018 (JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 38.43 yr (14,035 d) |
Aphelion | 2.9012 AU |
Perihelion | 1.8657 AU |
2.3835 AU | |
Eccentricity | 0.2172 |
3.68 yr (1,344 d) | |
187.50° | |
0° 16m 4.08s / day | |
Inclination | 2.0964° |
171.55° | |
151.67° | |
Physical characteristics | |
3.345±0.717 km[5][6] 3.351 km[7] | |
3.523±0.0025 h (R)[8] 3.5257±0.0007 h[9] 3.53±0.010 h (R)[10] | |
0.2232[7] 0.250±0.093[5][6] | |
S (SDSS-MOC)[11] S (Pan-STARRS)[12] | |
13.79±0.54[12] 14.290±0.200 (R)[10] 14.3[2] 14.338±0.004 (R)[8] 14.5[6] 14.62[3][7] | |
(9948) 1990 QB2 (provisional designation 1990 QB2) is a stony Nysian asteroid from the inner region of the asteroid belt, approximately 3.4 kilometers (2.1 miles) in diameter. It was discovered on 22 August 1990, by American astronomer Henry Holt at the Palomar Observatory in California.[1] The likely elongated S-type asteroid has a rotation period of 3.53 hours.[3] This asteroid has not been named.[1]
MPC-object
was invoked but never defined (see the help page).jpldata
was invoked but never defined (see the help page).lcdb
was invoked but never defined (see the help page).Ferret
was invoked but never defined (see the help page).Masiero-2011
was invoked but never defined (see the help page).WISE
was invoked but never defined (see the help page).Pravec-2012b
was invoked but never defined (see the help page).Waszczak-2015
was invoked but never defined (see the help page).Higgins-2006e
was invoked but never defined (see the help page).Chang-2015
was invoked but never defined (see the help page).SDSS-Taxonomy
was invoked but never defined (see the help page).Veres-2015
was invoked but never defined (see the help page).