Ryabov

05344, 1969 RK1, 1969RK1, 1978 RN, 1978RN, 1987 SP21, 1987SP21, 1987 UH1, 1987UH1, J69R01K, J78R00N, J87S21P, J87U01H

All data for this body: [vot]

MPC data
Name (number) Ryabov (5344)
a 2.70204
e 0.16524
i / sin(i) 7.0956 / 0.12353
q 2.25556
Q 3.14852
ω 228.6358
Node 173.8565
m 146.1444
n 0.2219
Epoch 2460800.5
nobs 4175
nopp 28
Years observed 1969-2025
rms 0.69
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.705
ep 0.155
sin(ip) 0.115
G 0.150
H 13.350
Mass
D 9.91 1.486
pV 0.073 0.0210
Value
Rotational Period 18.400
Period quality 2
Spectral Class C
Spectral Class Score 8.895
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7050 0.1553 0.1147 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.23 2.600 2.600 Nugent 2016AJ....152...63N NEATM
12.04 3.360 3.360 Masiero 2012ApJ...759L...8M NEATM
8.81 2.150 2.150 Masiero 2020PSJ.....1....5M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.070 0.0290 0.0290 Masiero 2012ApJ...759L...8M NEATM
0.070 0.0400 0.0400 Nugent 2016AJ....152...63N NEATM
0.086 0.0470 0.0470 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
13.35 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
18.49 2 Sidereal Durech 2018A&A...620A..91D Model
18.4916 2 Sidereal Durech 2019A&A...631A...2D Model
18.4917 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
B Bus VIS Bus 2002Icar..158..146B SPEC
C 0.784 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
C B 0.610000 0.390000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
C C 0.1901 0.1901 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT