Siegma

02560, 1932 CW, 1932CW, 1950 DO1, 1950DO1, 1952 OO, 1952OO, 1952 RB, 1952RB, 1957 TH, 1957TH, 1962 WC, 1962WC, 1973 FW1, 1973FW1, 1980 TK15, 1980TK15, 1982 BF1, 1982BF1, J32C00W, J50D01O, J52O00O, J52R00B, J57T00H, J62W00C, J73F01W, J80T15K, J82B01F

All data for this body: [vot]

MPC data

Name (number)	Siegma (2560)
a	2.75009
e	0.03351
i / sin(i)	5.9460 / 0.10359
q	2.65794
Q	2.84224
ω	287.0497
Node	148.3085
m	235.6907
n	0.2161
Epoch	2460800.5

n_obs	5168
n_opp	37
Years observed	1932-2025
rms	0.64

Best values

[raw, vot]

	Value	Standard error
Parent	Padua (363)

a_p	2.750
e_p	0.041
sin(i_p)	0.094
G	0.150
H	12.080
Mass
D	19.24	0.061
pV	0.092	0.0052

	Value
Rotational Period	10.300
Period quality	2
Spectral Class	X
Spectral Class Score	9.840

Family data

[raw, vot]

Parent	Parent name	Family ID	Family name	C_j	Author	Reference	Method
363	Padua	0	Padua		Novakovic	2019EPSC...13.1671N	HCM
363	Padua	507	Padua	0.2100	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
2.7500	0.0410	0.0939	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

[raw, vot]

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
15.50	4.680	4.680	Nugent	2016AJ....152...63N	NEATM
17.90	5.500	5.500	Nugent	2016AJ....152...63N	NEATM
17.98	0.170	0.170	Masiero	2014ApJ...791..121M	NEATM
18.53	0.114	0.114	Masiero	2011ApJ...741...68M	NEATM
19.67	0.180	0.180	Masiero	2014ApJ...791..121M	NEATM
19.83	0.089	0.089	Masiero	2011ApJ...741...68M	NEATM
20.98	5.090	5.090	Masiero	2020PSJ.....1....5M	NEATM
21.74	4.350	4.350	Ali-Lagoa	2018A&A...612A..85A	NEATM
22.59	0.630	0.630	Usui	2011PASJ...63.1117U	NEATM
23.52	8.433	8.433	Masiero	2017AJ....154..168M	NEATM
26.15	5.230	5.230	Ali-Lagoa	2018A&A...612A..85A	NEATM

Albedo data

[raw, vot]

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.045	0.0180	0.0180	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.048	0.0319	0.0319	Masiero	2017AJ....154..168M	NEATM
0.051	0.0280	0.0280	Masiero	2020PSJ.....1....5M	NEATM
0.065	0.0260	0.0260	Ali-Lagoa	2018A&A...612A..85A	NEATM
0.070	0.0700	0.0700	Nugent	2016AJ....152...63N	NEATM
0.094	0.0084	0.0084	Masiero	2011ApJ...741...68M	NEATM
0.100	0.0100	0.0100	Masiero	2014ApJ...791..121M	NEATM
0.100	0.0700	0.0700	Nugent	2016AJ....152...63N	NEATM
0.108	0.0201	0.0201	Masiero	2011ApJ...741...68M	NEATM
0.140	0.0200	0.0200	Masiero	2014ApJ...791..121M	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
12.08			MPC-2023-12-04	MPC-2023-12-04	Phot

Periods

[raw, vot]

Value	Quality	Side real or Synodic	Author	Reference	Method
10.309	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
8.57	2	Synodic	Chang	2015ApJS..219...27C	Lightcurve

Spectral Class Data

[raw, vot]

Class 1	Class 2	Probability of Class 1	Probability of Class 2	Taxonomy	Wavelength	Author	Reference	Method
C				DeMeo-Carry	VIS	DeMeo	2013Icar..226..723D	PHOT
C		0.900000		Mahlke	VIS	Mahlke	2022A&A...665A..26M	SPEC
C	C	0.3594	0.3594	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
X		0.92		Bus	VIS	Carvano	2010A&A...510A..43C	PHOT
X		1.000		Bus-Demeo	VIS	Sergeyev	2022A&A...658A.109S	PHOT
X	C			DeMeo-Carry	VIS	Choi	2023PSJ.....4...49C	PHOT
Xc				Bus	VIS	Bus	2002Icar..158..146B	SPEC