Siri

00332, 1892 FH, 1892FH, 1896 BA, 1896BA, 1922 XA, 1922XA, I92F00H, I96B00A, J22X00A

All data for this body: [vot]

MPC data
Name (number) Siri (332)
a 2.77323
e 0.09095
i / sin(i) 2.8386 / 0.04952
q 2.52099
Q 3.02547
ω 298.2615
Node 31.4362
m 147.0079
n 0.2134
Epoch 2460800.5
nobs 5464
nopp 69
Years observed 1892-2025
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.773
ep 0.064
sin(ip) 0.044
G 0.150
H 9.670
Mass
D 42.60 0.571
pV 0.142 0.0076
Value
Rotational Period 8.007
Period quality 3
Spectral Class X
Spectral Class Score 10.452
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7730 0.0640 0.0442 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
38.63 3.860 3.860 Ali-Lagoa 2018A&A...612A..85A NEATM
40.37 1.800 1.800 Tedesco 2002AJ....123.1056T STM
42.04 2.318 2.318 Ryan&Woodward 2010AJ....140..933R IRAS-STM
42.51 0.670 0.670 Usui 2011PASJ...63.1117U NEATM
44.84 4.480 4.480 Ali-Lagoa 2018A&A...612A..85A NEATM
47.70 2.112 2.112 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.123 0.0112 0.0112 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.126 0.0250 0.0250 Ali-Lagoa 2018A&A...612A..85A NEATM
0.159 0.0177 0.0177 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.170 0.0340 0.0340 Ali-Lagoa 2018A&A...612A..85A NEATM
0.172 0.0170 0.0170 Tedesco 2002AJ....123.1056T STM
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
9.67 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
6.003 2 Synodic Warner 2006MPBu...33...58W Lightcurve
7.0 2 Synodic Cieza LCDB Lightcurve
7.0 2 Synodic Lagerkvist 1978A&AS...31..361L Lightcurve
8.00617 2 Sidereal Durech 2020A&A...643A..59D Model
8.0074 3 Synodic Higgins 2008MPBu...35..123H Lightcurve
8.009 2+ Synodic Behrend LCDB Lightcurve
8.01 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
M 0.960000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
S A 0.620000 0.370000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
X Bus VIS Lazzaro 2004Icar..172..179L SPEC
X Tholen VIS Lazzaro 2004Icar..172..179L SPEC
X X 0.0754 0.0754 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
Xk Bus VIS Bus 2002Icar..158..146B SPEC