Johnny

03252, 1981 EM4, 1981EM4, J81E04M

All data for this body: [vot]

MPC data
Name (number) Johnny (3252)
a 2.66464
e 0.11170
i / sin(i) 12.7147 / 0.22010
q 2.36700
Q 2.96228
ω 158.4782
Node 326.7252
m 98.2051
n 0.2266
Epoch 2460800.5
nobs 3911
nopp 28
Years observed 1981-2025
rms 0.63
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.664
ep 0.151
sin(ip) 0.228
G 0.150
H 12.340
Mass
D 7.81 0.380
pV 0.419 0.0980
Value
Rotational Period 3.546
Period quality 3
Spectral Class S
Spectral Class Score 5.646
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 0.3900 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6638 0.1511 0.2281 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
7.81 0.380 0.380 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.419 0.0980 0.0980 Masiero 2012ApJ...759L...8M 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
12.34 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
3.54 2+ Synodic Ruthroff 2011MPBu...38...86R Lightcurve
3.5467 3 Synodic Owings 2011MPBu...38..141O Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 0.941 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT