Echion

13229, 1978 EG9, 1978EG9, 1997 VB1, 1997VB1, J78E09G, J97V01B

All data for this body: [vot]

MPC data
Name (number) Echion (13229)
a 5.26891
e 0.07619
i / sin(i) 3.8361 / 0.06690
q 4.86749
Q 5.67033
ω 166.3358
Node 343.0296
m 9.6340
n 0.0815
Epoch 2460800.5
nobs 2072
nopp 25
Years observed 1978-2025
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent
 
ap
ep
sin(ip)
G 0.150
H 11.790
Mass
D 24.87 0.590
pV 0.072 0.0140
Value
Rotational Period 8.400
Period quality 2+
Spectral Class D
Spectral Class Score 1.092
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
24.87 0.590 0.590 Grav 2011ApJ...742...40G NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.072 0.0140 0.0140 Grav 2011ApJ...742...40G 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
11.79 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
8.43 2- Synodic Kalup 2021ApJS..254....7K Lightcurve
8.4509 2 Synodic Podlewska 2021ApJS..255....4P Lightcurve
8.455 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
8.46 2+ Synodic French 2013MPBu...40..198F Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
D 0.182 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT