Table:
0
A
B
C
D
E
1
NGC number
Object type
Constellation
Right ascension ( J2000 )
Declination ( J2000 )
2
2014
Association of stars
Dorado
05h32m24s
°41′
3
2020
Diffuse nebula
Dorado
05h33m12s
°43′
4
2021
Association of stars
Dorado
05h33m30s
°27′
5
2022
Planetary nebula
Orion
05h42m06.2s
°05′11″
6
2023
Diffuse nebula
Orion
05h41m37.9s
°15′52″
7
2024
Emission nebula
Orion
05h41m43s
°51′
8
2025
Open cluster
Mensa
05h32m33s
°43′
9
2043
Open cluster
Mensa
05h35m56.7s
°04′23″
10
2068
Diffuse nebula
Orion
05h46m46.7s
°00′50″
11
2070
Open cluster
Dorado
05h38m42s
°06′
12
2080
Open cluster
Dorado
05h39m44s
°39′
13
2090
Spiral galaxy
Columba
05h47m02.3s
°15′05″
14
2099
Open cluster
Auriga
05h52m19s
°33′
15
2100
Open cluster
Dorado
05h42m09s
°12′43″

Questions and formulas:
Question: What is the average NGC number of everything with a Right ascension (J2000) of 05h33m30s?
Formula: AVERAGEIFS(A1,D1,"05h33m30s")
Formula2: AVERAGEIFS(A2:A15,D2:D15,"05h33m30s")
Level: easy
Question: What is the right ascension (J2000) with a Declination (J2000) of °12′43″, is a constellation of dorado, and has an NGC number larger than 2068?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(A1>2068)*(C1="dorado")*(E1="°12′43″")),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,(A2:A15>2068)*(C2:C15="dorado")*(E2:E15="°12′43″")),4))
Level: medium
Question: What type of object has an NGC number higher than 2090 and has a right ascension (J2000) of 05h52m19s?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(A1>2090)*(D1="05h52m19s")),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,(A2:A15>2090)*(D2:D15="05h52m19s")),2))
Level: medium