Johnayres

1995 YF23, 1995YF23, 1999 RG55, 1999RG55, 20530, J95Y23F, J99R55G

All data for this body: [vot]

MPC data
Name (number) Johnayres (20530)
a 3.14313
e 0.17734
i / sin(i) 1.0412 / 0.01817
q 2.58574
Q 3.70053
ω 164.6181
Node 177.3740
m 209.0260
n 0.1769
Epoch 2460800.5
nobs 1572
nopp 25
Years observed 1994-2025
rms 0.79
Best values
[raw, vot]

Value Standard error
Parent Themis (24)
 
ap 3.154
ep 0.142
sin(ip) 0.026
G 0.150
H 14.350
Mass
D
pV
Value
Rotational Period 11.268
Period quality 2
Spectral Class C
Spectral Class Score 6.262
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
24 Themis 0 Themis Novakovic 2019EPSC...13.1671N HCM
24 Themis 602 Themis 0.1200 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1535 0.1418 0.0260 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
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
14.35 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
11.2681 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 C 0.0985 0.3680 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C 0.75 Bus VIS Carvano 2010A&A...510A..43C PHOT
C C 0.4603 0.3680 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT