1991 RA1

1991RA1, 11290, 1975 WB, 1975WB, 1987 QL3, 1987QL3, J75W00B, J87Q03L, J91R01A

All data for this body: [vot]

MPC data
Name (number) 1991 RA1 (11290)
a 2.54972
e 0.20400
i / sin(i) 11.8120 / 0.20470
q 2.02959
Q 3.06986
ω 50.1301
Node 322.9387
m 83.2995
n 0.2421
Epoch 2460800.5
nobs 3057
nopp 26
Years observed 1975-2025
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.549
ep 0.159
sin(ip) 0.218
G 0.150
H 13.930
Mass
D 4.86 0.054
pV 0.206 0.0222
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 9.239
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5491 0.1589 0.2179 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.86 0.186 0.186 Masiero 2011ApJ...741...68M NEATM
4.86 0.056 0.056 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.206 0.0276 0.0276 Masiero 2011ApJ...741...68M NEATM
0.206 0.0375 0.0375 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
13.93 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
L 0.649 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.76 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.9531 0.9531 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT