Semirot

02182, 1937 KF, 1937KF, 1942 FN, 1942FN, 1953 FH1, 1953FH1, 1953 GY, 1953GY, 1955 UT, 1955UT, 1972 TM4, 1972TM4, 1975 EU1, 1975EU1, 1975 EU3, 1975EU3, 1978 VB8, 1978VB8, J37K00F, J42F00N, J53F01H, J53G00Y, J55U00T, J72T04M, J75E01U, J75E03U, J78V08B

All data for this body: [vot]

MPC data

Name (number)	Semirot (2182)
a	3.12467
e	0.13780
i / sin(i)	2.2593 / 0.03942
q	2.69409
Q	3.55525
ω	200.7835
Node	50.8571
m	312.8419
n	0.1784
Epoch	2460800.5

n_obs	7358
n_opp	38
Years observed	1953-2025
rms	0.57

Best values

[raw, vot]

	Value	Standard error
Parent	Themis (24)

a_p	3.130
e_p	0.154
sin(i_p)	0.029
G	0.150
H	11.730
Mass
D	24.38	0.090
pV	0.076	0.0031

	Value
Rotational Period	8.320
Period quality	3-
Spectral Class	B
Spectral Class Score	13.356

Family data

[raw, vot]

Parent	Parent name	Family ID	Family name	C_j	Author	Reference	Method
24	Themis	0	Themis		Novakovic	2019EPSC...13.1671N	HCM
24	Themis	602	Themis	-0.1100	Nesvorny	doi.org/10.26033/6cg5-pt13	HCM-2020-08-14

Proper elements data

[raw, vot]

a_p	e_p	sin(i_p)	Author	Reference	Method
3.1298	0.1543	0.0295	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

[raw, vot]

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
17.83	5.490	5.490	Nugent	2016AJ....152...63N	NEATM
19.91	5.850	5.850	Nugent	2016AJ....152...63N	NEATM
20.60	4.120	4.120	Ali-Lagoa	2018A&A...612A..85A	NEATM
22.04	0.470	0.470	Masiero	2012ApJ...759L...8M	NEATM
22.87	1.630	1.630	Usui	2011PASJ...63.1117U	NEATM
24.31	0.100	0.100	Masiero	2014ApJ...791..121M	NEATM
25.13	1.900	1.900	Tedesco	2002AJ....123.1056T	STM
25.36	0.252	0.252	Masiero	2011ApJ...741...68M	NEATM
25.95	5.190	5.190	Ali-Lagoa	2018A&A...612A..85A	NEATM
26.38	1.012	1.012	Ryan&Woodward	2010AJ....140..933R	IRAS-NEATM
27.85	2.215	2.215	Ryan&Woodward	2010AJ....140..933R	IRAS-STM

Albedo data

[raw, vot]

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.066	0.0260	0.0260	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.069	0.0052	0.0052	Ryan&Woodward	2010AJ....140..933R	IRAS-STM
0.077	0.0060	0.0060	Ryan&Woodward	2010AJ....140..933R	IRAS-NEATM
0.080	0.0700	0.0700	Nugent	2016AJ....152...63N	NEATM
0.083	0.0067	0.0067	Masiero	2011ApJ...741...68M	NEATM
0.085	0.0140	0.0140	Tedesco	2002AJ....123.1056T	STM
0.090	0.0200	0.0200	Masiero	2014ApJ...791..121M	NEATM
0.091	0.0160	0.0160	Masiero	2012ApJ...759L...8M	NEATM
0.100	0.1200	0.1200	Nugent	2016AJ....152...63N	NEATM
0.105	0.0420	0.0420	Ali-Lagoa	2018A&A...612A..85A	NEATM

G data

[raw, vot]

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.15			MPC-2023-12-94	MPC-2023-12-94	Phot

H data

[raw, vot]

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
11.73			MPC-2023-12-04	MPC-2023-12-04	Phot

Periods

[raw, vot]

Value	Quality	Side real or Synodic	Author	Reference	Method
8.328	3-	Synodic	Klinglesmith	2013MPBu...40..154K	Lightcurve
8.33582	2	Sidereal	Durech	2020A&A...643A..59D	Model
8.3359	2	Sidereal	Durech	2023A&A...675A..24D	Model

Spectral Class Data

[raw, vot]

Class 1	Class 2	Probability of Class 1	Probability of Class 2	Taxonomy	Wavelength	Author	Reference	Method
B		1.000		Bus-Demeo	VIS	Sergeyev	2022A&A...658A.109S	PHOT
B	B	0.4884	0.4500	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
B	B	0.7376	0.4500	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
C				DeMeo-Carry	VIS	DeMeo	2013Icar..226..723D	PHOT
C		0.87		Bus	VIS	Carvano	2010A&A...510A..43C	PHOT
C	B	0.7011	0.4500	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT