Ritter

10781, 1991 PJ20, 1991PJ20, 1991 PV31, 1991PV31, 1997 XM1, 1997XM1, J91P20J, J91P31V, J97X01M

All data for this body: [vot]

MPC data
Name (number) Ritter (10781)
a 2.63992
e 0.12160
i / sin(i) 5.4792 / 0.09548
q 2.31892
Q 2.96092
ω 152.7140
Node 184.6157
m 295.3305
n 0.2298
Epoch 2460800.5
nobs 3456
nopp 25
Years observed 1986-2025
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.639
ep 0.093
sin(ip) 0.099
G 0.150
H 14.240
Mass
D 8.55 0.130
pV 0.073 0.0161
Value
Rotational Period 17.912
Period quality 2
Spectral Class X
Spectral Class Score 4.129
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6395 0.0932 0.0990 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.12 1.640 1.640 Masiero 2020PSJ.....1....5M NEATM
7.77 2.490 2.490 Masiero 2020PSJ.....1....5M NEATM
8.56 0.131 0.131 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.067 0.0500 0.0500 Masiero 2020PSJ.....1....5M NEATM
0.073 0.0187 0.0187 Masiero 2011ApJ...741...68M NEATM
0.080 0.0410 0.0410 Masiero 2020PSJ.....1....5M 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
14.24 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
17.9122 2 Synodic Pal 2020ApJS..247...26P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
X X 0.6882 0.6882 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT