Schwassmannia

00989, 1922 WD, 1922WD, 1935 UE, 1935UE, 1935 UF, 1935UF, J22W00D, J35U00E, J35U00F

All data for this body: [vot]

MPC data
Name (number) Schwassmannia (989)
a 2.66172
e 0.24940
i / sin(i) 14.6904 / 0.25360
q 1.99787
Q 3.32556
ω 165.6625
Node 243.3000
m 223.7365
n 0.2270
Epoch 2460800.5
nobs 4830
nopp 35
Years observed 1922-2025
rms 0.60
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.659
ep 0.249
sin(ip) 0.255
G 0.150
H 11.820
Mass
D 13.77 0.053
pV 0.199 0.0175
Value
Rotational Period 107.800
Period quality 3
Spectral Class S
Spectral Class Score 9.650
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6595 0.2492 0.2550 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
12.20 1.120 1.120 Usui 2011PASJ...63.1117U NEATM
12.63 0.120 0.120 Masiero 2014ApJ...791..121M NEATM
12.68 2.540 2.540 Ali-Lagoa 2018A&A...612A..85A NEATM
12.86 0.800 0.800 Tedesco 2002AJ....123.1056T STM
14.06 0.059 0.059 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.172 0.0262 0.0262 Masiero 2011ApJ...741...68M NEATM
0.203 0.0270 0.0270 Tedesco 2002AJ....123.1056T STM
0.209 0.0840 0.0840 Ali-Lagoa 2018A&A...612A..85A NEATM
0.310 0.0600 0.0600 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
11.82 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
107.85 3 Synodic Benishek 2014MPBu...41..133B Lightcurve
120.3 2 Synodic Stephens 2014MPBu...41...92S Lightcurve
25.0292 2 Synodic Pal 2020ApJS..247...26P Lightcurve
4.58 1 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
S Tholen VIS Lazzaro 2004Icar..172..179L SPEC
S 0.930000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
T Bus VIS Lazzaro 2004Icar..172..179L SPEC