VOTable 1.4
  description: This file was generated by the Minor Planet Physical Properties Catalogue (MP3C) at https://mp3c.oca.eu/. MP3C curates data on asteroids and other minor bodies of the Solar System. It aggregates measurements from different sources of properties such as masses, diameters, albedos and orbital parameters.
INFO website_revision = 246eca2a
INFO database_version = 3.3.3-beta.1
INFO database_revision = 501f1c99
INFO database_date_created = 2025-10-03T11:07:33.397944+00:00
INFO date_file_created = 2026-01-13T04:07:22.592839+00:00
RESOURCE (results)
TABLE mpc
FIELD name |  | unicodeChar[*] |  |  | 
FIELD number |  | long |  |  |  | values: null=-9223372036854775808
FIELD a |  | double |  |  | 
FIELD e |  | double |  |  | 
FIELD i |  | double |  |  | 
FIELD sin_i |  | double |  |  | 
FIELD perihelion_distance |  | double |  |  | 
FIELD aphelion_distance |  | double |  |  | 
FIELD perihelion |  | double |  |  | 
FIELD node |  | double |  |  | 
FIELD m |  | double |  |  | 
FIELD n |  | double |  |  | 
FIELD epoch |  | double |  |  | 
FIELD n_obs |  | long |  |  |  | values: null=-9223372036854775808
FIELD n_opp |  | long |  |  |  | values: null=-9223372036854775808
FIELD multiopp_year_first_observed |  | int |  |  |  | values: null=-2147483648
FIELD multiopp_year_last_observed |  | int |  |  |  | values: null=-2147483648
FIELD singleopp_arc_length |  | double |  |  | 
FIELD rms |  | double |  |  | 
Irma	177	2.770396	0.234232	1.3815	0.024109	2.1214807	3.4193113	39.7016	346.92593	4.51335	0.213743	2460800.5	4920	58	1877	2025	NaN	0.74
TABLE best
FIELD parent |  | int |  |  |  | values: null=-2147483648
FIELD parent_name |  | unicodeChar[*] |  |  | 
FIELD a_p |  | double |  |  | 
FIELD a_p_err |  | double |  |  | 
FIELD e_p |  | double |  |  | 
FIELD e_p_err |  | double |  |  | 
FIELD sin_i_p |  | double |  |  | 
FIELD sin_i_p_err |  | double |  |  | 
FIELD g |  | double |  |  | 
FIELD g_err |  | double |  |  | 
FIELD h |  | double |  |  | 
FIELD h_err |  | double |  |  | 
FIELD mass |  | double |  |  | 
FIELD mass_err |  | double |  |  | 
FIELD diameter |  | double |  |  | 
FIELD diameter_err |  | double |  |  | 
FIELD albedo |  | double |  |  | 
FIELD albedo_err |  | double |  |  | 
-2147483648		2.7699	NaN	0.1992	NaN	0.0384	NaN	0.15	NaN	9.63	NaN	2.4860743e+17	6.797678e+16	68.555046	0.2444396	0.050409302	0.0013741673
TABLE families
FIELD parent |  | int |  |  |  | values: null=-2147483648
FIELD parent_name |  | unicodeChar[*] |  |  | 
FIELD family_id |  | unicodeChar[*] |  |  | 
FIELD family_name |  | unicodeChar[*] |  |  | 
FIELD c_param |  | double |  |  | 
FIELD author |  | unicodeChar[*] |  |  | 
FIELD ref |  | unicodeChar[*] |  |  | 
FIELD method |  | unicodeChar[*] |  |  | 
177	Irma	-1	Irma	-1	Nesvorny	2024ApJS..274...25N	HCM-2024
TABLE proper-elements
FIELD a_p |  | double |  |  | 
FIELD e_p |  | double |  |  | 
FIELD sin_i_p |  | double |  |  | 
FIELD author |  | unicodeChar[*] |  |  | 
FIELD ref |  | unicodeChar[*] |  |  | 
FIELD method |  | unicodeChar[*] |  |  | 
2.7699	0.1992	0.0384	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024
TABLE spectral
FIELD first_spec_class |  | unicodeChar[*] |  |  | 
FIELD second_spec_class |  | unicodeChar[*] |  |  | 
FIELD prob_first_spec_class |  | double |  |  | 
FIELD prob_second_spec_class |  | double |  |  | 
FIELD taxonomy |  | unicodeChar[*] |  |  | 
FIELD author |  | unicodeChar[*] |  |  | 
FIELD ref |  | unicodeChar[*] |  |  | 
FIELD method |  | unicodeChar[*] |  |  | 
C		0.789	NaN	Bus-Demeo	Sergeyev	2022A&A...658A.109S	PHOT
C		0.92	NaN	Mahlke	Mahlke	2022A&A...665A..26M	SPEC
Caa		NaN	NaN	Tholen	Lazzaro	2004Icar..172..179L	SPEC
Ch		NaN	NaN	Bus	Bus	2002Icar..158..146B	SPEC
Ch		NaN	NaN	Bus	Lazzaro	2004Icar..172..179L	SPEC
P		0.99	NaN	Mahlke	Mahlke	2022A&A...665A..26M	SPEC
TABLE masses
FIELD value |  | double |  |  | 
FIELD unc_up |  | double |  |  | 
FIELD unc_lo |  | double |  |  | 
FIELD author |  | unicodeChar[*] |  |  | 
FIELD ref |  | unicodeChar[*] |  |  | 
FIELD method |  | unicodeChar[*] |  |  | 
1.9321486e+17	9.613368e+16	9.613368e+16	Fienga	INPOP19a	Ephem
3.04e+17	NaN	NaN	Folkner	2014IPNPR.196C...1F	Ephem
TABLE diameters
FIELD value |  | double |  |  | 
FIELD unc_up |  | double |  |  | 
FIELD unc_lo |  | double |  |  | 
FIELD author |  | unicodeChar[*] |  |  | 
FIELD ref |  | unicodeChar[*] |  |  | 
FIELD method |  | unicodeChar[*] |  |  | 
102.4	18.7	18.7	Nugent	2016AJ....152...63N	NEATM
67.4	15.74	15.74	Masiero	2021PSJ.....2..162M	NEATM
67.42	0.29	0.29	Nugent	2016AJ....152...63N	NEATM
68.52	24.302	24.302	Masiero	2017AJ....154..168M	NEATM
68.64	6.86	6.86	Ali-Lagoa	2018A&A...612A..85A	NEATM
69.05	0.65	0.65	Masiero	2014ApJ...791..121M	NEATM
70.82	7.08	7.08	Ali-Lagoa	2018A&A...612A..85A	NEATM
72.314	2.478	2.478	Masiero	2011ApJ...741...68M	NEATM
73.08	0.81	0.81	Usui	2011PASJ...63.1117U	NEATM
73.22	1.6	1.6	Tedesco	2002AJ....123.1056T	STM
73.32	17.49	17.49	Masiero	2020PSJ.....1....5M	NEATM
73.3615	8.5847	8.5847	Ryan&Woodward	2010AJ....140..933R	MSX-STM
74.7946	4.6241	4.6241	Ryan&Woodward	2010AJ....140..933R	IRAS-NEATM
77.0838	1.8985	1.8985	Ryan&Woodward	2010AJ....140..933R	IRAS-STM
78.9116	11.022	11.022	Ryan&Woodward	2010AJ....140..933R	MSX-NEATM
83.68	22.24	22.24	Masiero	2012ApJ...759L...8M	NEATM
TABLE albedos
FIELD value |  | double |  |  | 
FIELD unc_up |  | double |  |  | 
FIELD unc_lo |  | double |  |  | 
FIELD author |  | unicodeChar[*] |  |  | 
FIELD ref |  | unicodeChar[*] |  |  | 
FIELD method |  | unicodeChar[*] |  |  | 
0.02	0.01	0.01	Nugent	2016AJ....152...63N	NEATM
0.032	0.026	0.026	Masiero	2012ApJ...759L...8M	NEATM
0.035	0.049	0.049	Masiero	2020PSJ.....1....5M	NEATM
0.038	0.013	0.02	Masiero	2021PSJ.....2..162M	NEATM
0.0418	0.0254	0.0254	Masiero	2017AJ....154..168M	NEATM
0.0476	0.0024	0.0024	Ryan&Woodward	2010AJ....140..933R	IRAS-STM
0.05	0.01	0.01	Nugent	2016AJ....152...63N	NEATM
0.0514	0.0062	0.0062	Ryan&Woodward	2010AJ....140..933R	IRAS-NEATM
0.0522	0.0109	0.0109	Ryan&Woodward	2010AJ....140..933R	MSX-NEATM
0.0527	0.002	0.002	Tedesco	2002AJ....123.1056T	STM
0.054	0.0095	0.0095	Masiero	2011ApJ...741...68M	NEATM
0.055	0.011	0.011	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.0564	0.0111	0.0111	Ryan&Woodward	2010AJ....140..933R	MSX-STM
0.058	0.012	0.012	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.06	0.01	0.01	Masiero	2014ApJ...791..121M	NEATM
TABLE g
FIELD value |  | double |  |  | 
FIELD unc_up |  | double |  |  | 
FIELD unc_lo |  | double |  |  | 
FIELD author |  | unicodeChar[*] |  |  | 
FIELD ref |  | unicodeChar[*] |  |  | 
FIELD method |  | unicodeChar[*] |  |  | 
0.15	NaN	NaN	MPC-2023-12-94	MPC-2023-12-94	Phot
TABLE h
FIELD value |  | double |  |  | 
FIELD unc_up |  | double |  |  | 
FIELD unc_lo |  | double |  |  | 
FIELD author |  | unicodeChar[*] |  |  | 
FIELD ref |  | unicodeChar[*] |  |  | 
FIELD method |  | unicodeChar[*] |  |  | 
9.63	NaN	NaN	MPC-2023-12-04	MPC-2023-12-04	Phot
