7 Iris

Asteroid profile

Class: MBA

Family: MB-inner

Tholen: S

SMASSII: S

GAjpl: 0.2766

GAminorpl: 0.2567

Notes on albedo parameters:

GAjpl — geometric albedo from the NASA JPL Small-Body Database.
GAminorpl — geometric albedo from the Minor Planet Physical Properties Database.

Total observations: 58

Bands: B, G, H, J, R, U, V

Observatories: CASLEO, Calern, Catalina, McDonald 0.9, McDonald 2.1, Palomar, Steward 0.5, Steward 2.3, di Brera

References: 1974 Zellner, 1976b Zellner, 1990 Broglia, 2011 Gil-Hutton, 2017 Devogele, 2022 Masiero, 2025 Masiero

All rows for this asteroid are exported.

Measurements

Sorting: first by filter groups (U-like, B-like, V-like, R-like, I-like, IR), then by filter, then by phase angle.

Date	Band	Phase	P	sP	Q	sQ	Pr	Qr	Psi	Obs	Ref
1973 / 12 / 28.34	U	1.64	0.37	0.08	None	None	-0.37	86.2	None	Catalina	1976b Zellner
1974 / 01 / 16.41	U	11.04	0.82	0.1	None	None	-0.82	88.8	None	Catalina	1976b Zellner
1973 / 12 / 07.3	U	13.41	0.49	0.08	None	None	-0.49	90.9	None	Steward 2.3	1976b Zellner
1975 / 06 / 14.18	U	17.01	0.36	0.1	None	None	-0.35	83.0	None	Catalina	1976b Zellner
1974 / 02 / 02.25	U	18.57	0.13	0.15	None	None	-0.13	99.6	None	Catalina	1976b Zellner
1974 / 02 / 22.27	U	24.11	0.88	0.1	None	None	0.84	-8.4	None	Catalina	1976b Zellner
1974 / 04 / 01.14	U	26.9	1.07	0.28	None	None	1.06	4.8	None	Catalina	1976b Zellner
1973 / 10 / 07.45	U	32.15	1.8	0.1	None	None	1.8	0.4	None	Steward 2.3	1976b Zellner
1973 / 10 / 06.52	U	32.23	1.99	0.31	None	None	1.98	-1.5	None	Steward 2.3	1976b Zellner
1973 / 09 / 12.48	U	32.72	2.04	0.21	None	None	2.04	0.2	None	Catalina	1976b Zellner
1973 / 12 / 28.33	B	1.64	0.39	0.04	None	None	-0.39	88.4	None	Catalina	1976b Zellner
1975 / 04 / 03.36	B	8.76	0.76	0.01	None	None	-0.76	89.6	None	Steward 2.3	1976b Zellner
1974 / 01 / 16.42	B	11.04	0.7	0.05	None	None	-0.7	90.1	None	Catalina	1976b Zellner
1973 / 12 / 07.29	B	13.41	0.6	0.02	None	None	-0.59	94.2	None	Steward 2.3	1976b Zellner
1974 / 01 / 29.2	B	17.0	0.37	0.02	None	None	-0.37	86.5	None	Catalina	1976b Zellner
1974 / 01 / 30.3	B	17.44	0.32	0.04	None	None	-0.32	91.3	None	Catalina	1976b Zellner
1974 / 02 / 22.29	B	24.11	0.42	0.02	None	None	0.42	-0.4	None	Catalina	1976b Zellner
1973 / 11 / 04.4	B	27.33	0.74	0.05	None	None	0.74	-1.6	None	Steward 2.3	1976b Zellner
1973 / 10 / 07.45	B	32.15	1.34	0.05	None	None	1.34	0.7	None	Steward 2.3	1976b Zellner
1973 / 09 / 12.44	B	32.72	1.59	0.06	None	None	1.59	-0.5	None	Catalina	1976b Zellner
1973 / 12 / 28.34	G	1.64	0.37	0.04	None	None	-0.37	87.9	None	Catalina	1976b Zellner
1975 / 04 / 03.4	G	8.75	0.73	0.02	None	None	-0.73	90.8	None	Steward 2.3	1976b Zellner
1974 / 01 / 16.4	G	11.03	0.7	0.07	None	None	-0.7	90.1	None	Catalina	1976b Zellner
1973 / 12 / 07.28	G	13.42	0.64	0.02	None	None	-0.64	91.1	None	Steward 2.3	1976b Zellner
1974 / 01 / 29.2	G	17.0	0.38	0.04	None	None	-0.38	90.2	None	Catalina	1976b Zellner
1974 / 01 / 30.31	G	17.44	0.31	0.06	None	None	-0.31	87.0	None	Catalina	1976b Zellner
1974 / 02 / 02.27	G	18.58	0.26	0.05	None	None	-0.26	91.3	None	Catalina	1976b Zellner
1974 / 02 / 22.3	G	24.12	0.32	0.03	None	None	0.32	-1.1	None	Catalina	1976b Zellner
1974 / 04 / 01.16	G	26.9	0.66	0.04	None	None	0.66	0.3	None	Catalina	1976b Zellner
1973 / 11 / 04.39	G	27.33	0.58	0.08	None	None	0.58	0.2	None	Steward 2.3	1976b Zellner
1973 / 10 / 31.25	G	28.46	0.88	0.24	None	None	0.88	-0.3	None	Steward 0.5	1976b Zellner
1973 / 10 / 27.45	G	29.32	0.9	0.16	None	None	0.9	0.7	None	Steward 0.5	1976b Zellner
1973 / 10 / 07.47	G	32.15	1.24	0.06	None	None	1.24	1.0	None	Steward 2.3	1976b Zellner
1973 / 10 / 06.51	G	32.23	1.26	0.06	None	None	1.26	-1.3	None	Steward 2.3	1976b Zellner
1973 / 09 / 12.46	G	32.72	1.41	0.05	None	None	1.41	-0.2	None	Catalina	1976b Zellner
2008 / 04 / 03	V	3.8	0.47	0.04	153.5	2.5	-0.47	None	155.2	CASLEO	2011 Gil-Hutton
1958 / 10 / 22.42	V	5.13	0.68	None	None	None	-0.68	91.0	None	McDonald 2.1	1974 Zellner
2015 / 02 / 18	V	8.24	None	0.03	None	None	-0.64	None	None	Calern	2017 Devogele
2008 / 05 / 05	V	10.5	0.74	0.05	104.6	2.1	-0.74	None	102.1	CASLEO	2011 Gil-Hutton
1989 / 03 / 02.896	V	11.2	None	0.04	None	None	-0.71	90.7	None	di Brera	1990 Broglia
1989 / 03 / 04.904	V	12.0	None	0.02	None	None	-0.71	92.1	None	di Brera	1990 Broglia
1989 / 03 / 06.917	V	12.8	None	0.04	None	None	-0.74	93.3	None	di Brera	1990 Broglia
1958 / 12 / 03.1	V	22.41	0.16	None	None	None	0.15	9.0	None	McDonald 2.1	1974 Zellner
1959 / 02 / 04.21	V	35.16	1.58	None	None	None	1.57	-3.0	None	McDonald 0.9	1974 Zellner
1959 / 02 / 05.1	V	35.24	1.17	None	None	None	1.17	1.0	None	McDonald 0.9	1974 Zellner
2015 / 02 / 18	R	8.24	None	0.03	None	None	-0.82	None	None	Calern	2017 Devogele
2008 / 05 / 05	R	10.5	0.78	0.06	103.7	2.3	-0.78	None	102.1	CASLEO	2011 Gil-Hutton
1973 / 10 / 07.52	R	32.14	1.22	0.26	None	None	1.21	2.7	None	Steward 2.3	1976b Zellner
2023 / 05 / 16	H	6.6	None	0.14	None	3.1	-0.96	94.0	None	Palomar	2025 Masiero
2023 / 01 / 07	H	18.7	None	0.1	None	5.0	-0.58	89.0	None	Palomar	2025 Masiero
2022 / 04 / 02	H	25.5	None	0.1	None	13.5	0.22	10.9	None	Palomar	2025 Masiero
2021 / 11 / 08	H	29.0	None	0.02	None	0.1	0.61	16.9	None	Palomar	2022 Masiero
2021 / 09 / 04	H	30.0	None	0.02	None	0.2	0.67	173.6	None	Palomar	2022 Masiero
2023 / 05 / 16	J	6.6	None	0.12	None	2.5	-1.26	88.2	None	Palomar	2025 Masiero
2023 / 01 / 07	J	18.7	None	0.1	None	7.6	-0.39	78.9	None	Palomar	2025 Masiero
2022 / 04 / 02	J	25.5	None	0.1	None	16.8	0.18	170.2	None	Palomar	2025 Masiero
2021 / 11 / 08	J	29.0	None	0.04	None	1.0	0.74	6.0	None	Palomar	2022 Masiero
2021 / 09 / 04	J	30.0	None	0.03	None	0.4	0.81	172.7	None	Palomar	2022 Masiero

Plot filters

The plot shows P_r, and if it is unavailable, P. Error bars use sP. The same reference is shown in the same color.

Marker shape encodes the filter group. Bottom legend: color = reference.

Plot legend

Marker shape → filter group

U-like B-like V-like R-like I-like IR Other

Color → reference