Megumi

03774, 1931 BG, 1931BG, 1933 OA, 1933OA, 1974 FW1, 1974FW1, 1974 HO3, 1974HO3, 1976 YL6, 1976YL6, 1986 TH1, 1986TH1, 1987 YC, 1987YC, J31B00G, J33O00A, J74F01W, J74H03O, J76Y06L, J86T01H, J87Y00C

All data for this body: [vot]

MPC data
Name (number) Megumi (3774)
a 3.00451
e 0.05324
i / sin(i) 9.2002 / 0.15988
q 2.84456
Q 3.16446
ω 283.9812
Node 291.5586
m 316.8495
n 0.1893
Epoch 2460800.5
nobs 5065
nopp 32
Years observed 1931-2025
rms 0.63
Best values
[raw, vot]

Value Standard error
Parent Eos (221)
 
ap 3.005
ep 0.085
sin(ip) 0.181
G 0.150
H 11.280
Mass
D 18.98 0.111
pV 0.137 0.0110
Value
Rotational Period
Period quality None
Spectral Class L
Spectral Class Score 6.757
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
221 Eos 0 Eos Novakovic 2019EPSC...13.1671N HCM
221 Eos 606 Eos -0.7900 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0052 0.0851 0.1808 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
18.25 0.150 0.150 Masiero 2014ApJ...791..121M NEATM
19.18 0.250 0.250 Masiero 2014ApJ...791..121M NEATM
19.68 0.317 0.317 Masiero 2011ApJ...741...68M NEATM
20.15 4.030 4.030 Ali-Lagoa 2018A&A...612A..85A NEATM
20.88 0.307 0.307 Masiero 2011ApJ...741...68M NEATM
21.53 1.340 1.340 Usui 2011PASJ...63.1117U NEATM
24.08 4.820 4.820 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.111 0.0440 0.0440 Ali-Lagoa 2018A&A...612A..85A NEATM
0.123 0.0225 0.0225 Masiero 2011ApJ...741...68M NEATM
0.138 0.0158 0.0158 Masiero 2011ApJ...741...68M NEATM
0.140 0.0500 0.0500 Masiero 2014ApJ...791..121M NEATM
0.158 0.0630 0.0630 Ali-Lagoa 2018A&A...612A..85A NEATM
0.160 0.0300 0.0300 Masiero 2014ApJ...791..121M 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
11.28 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
K L 0.4275 0.3870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
L DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
L 0.97 Bus VIS Carvano 2010A&A...510A..43C PHOT
L L 0.4695 0.3870 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT