1991 EL4

1991EL4, 13959, 1992 PA3, 1992PA3, J91E04L, J92P03A

All data for this body: [vot]

MPC data
Name (number) 1991 EL4 (13959)
a 2.67297
e 0.16948
i / sin(i) 12.8099 / 0.22172
q 2.21994
Q 3.12599
ω 87.2358
Node 181.1182
m 218.1851
n 0.2255
Epoch 2460800.5
nobs 5610
nopp 24
Years observed 1991-2025
rms 0.58
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.672
ep 0.162
sin(ip) 0.228
G 0.150
H 13.370
Mass
D 6.49 0.266
pV 0.290 0.0477
Value
Rotational Period 3.124
Period quality 3
Spectral Class S
Spectral Class Score 18.071
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 0.3800 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6725 0.1620 0.2282 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.49 0.266 0.266 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.290 0.0477 0.0477 Masiero 2011ApJ...741...68M 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
13.37 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
3.124 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
3.12405 3 Synodic Pravec LCDB Lightcurve
3.12412 2 Sidereal Durech 2023A&A...675A..24D Model
3.124124 2 Sidereal Durech 2019A&A...631A...2D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.65 Bus VIS Carvano 2010A&A...510A..43C PHOT
S 0.997 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.5042 0.8330 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9606 0.8330 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT