Siljan

07770, 1950 TA2, 1950TA2, 1969 OP, 1969OP, 1975 VR, 1975VR, 1977 CT2, 1977CT2, 1987 CC, 1987CC, 1987 DY, 1987DY, 1992 EQ8, 1992EQ8, 1992 GB8, 1992GB8, 1994 QU, 1994QU, J50T02A, J69O00P, J75V00R, J77C02T, J87C00C, J87D00Y, J92E08Q, J92G08B, J94Q00U

All data for this body: [vot]

MPC data

Name (number)	Siljan (7770)
a	2.89613
e	0.07821
i / sin(i)	3.3453 / 0.05835
q	2.66963
Q	3.12263
ω	271.1576
Node	91.2096
m	58.0809
n	0.2000
Epoch	2460800.5

n_obs	4060
n_opp	33
Years observed	1950-2025
rms	0.66

Best values

[raw, vot]

	Value	Standard error
Parent	Koronis (158)

a_p	2.894
e_p	0.043
sin(i_p)	0.039
G	0.150
H	12.730
Mass
D
pV

	Value
Rotational Period	6.682
Period quality	2+
Spectral Class	S
Spectral Class Score	10.128

Family data

[raw, vot]

Parent	Parent name	Family ID	Family name	C_j	Author	Reference	Method
158	Koronis	0	Koronis		Novakovic	2019EPSC...13.1671N	HCM
158	Koronis	605	Koronis	0.3300	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
2.8944	0.0432	0.0387	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

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
12.73			MPC-2023-12-04	MPC-2023-12-04	Phot

Periods

[raw, vot]

Value	Quality	Side real or Synodic	Author	Reference	Method
6.6821	2+	Synodic	Behrend	LCDB	Lightcurve

Spectral Class Data

[raw, vot]

Class 1	Class 2	Probability of Class 1	Probability of Class 2	Taxonomy	Wavelength	Author	Reference	Method
D	S	0.5900	0.4340	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT
S		0.965		Bus-Demeo	VIS	Sergeyev	2022A&A...658A.109S	PHOT
S	S	0.7230	0.4340	Bus-Demeo	VIS	Sergeyev	2021A&A...652A..59S	PHOT