1991 SR1

1991SR1, 12304, 1949 WQ1, 1949WQ1, J49W01Q, J91S01R

All data for this body: [vot]

MPC data
Name (number) 1991 SR1 (12304)
a 2.60759
e 0.16338
i / sin(i) 12.7751 / 0.22112
q 2.18155
Q 3.03362
ω 158.1710
Node 208.0628
m 353.9208
n 0.2341
Epoch 2460800.5
nobs 3658
nopp 25
Years observed 1949-2025
rms 0.64
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.607
ep 0.133
sin(ip) 0.226
G 0.150
H 13.300
Mass
D 6.62 0.093
pV 0.232 0.0349
Value
Rotational Period 65.810
Period quality 2
Spectral Class S
Spectral Class Score 1.000
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
15 Eunomia 0 Eunomia Novakovic 2019EPSC...13.1671N HCM
15 Eunomia 502 Eunomia -0.4400 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6073 0.1330 0.2257 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.62 0.093 0.093 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.232 0.0349 0.0349 Masiero 2011ApJ...741...68M 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
13.30 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
65.814 2 Sidereal Durech 2018A&A...617A..57D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S S None None Movis NIR Popescu 2018A&A...617A..12P PHOT