1997 EM4

1997EM4, 1998 SS20, 1998SS20, H8370, J97E04M, J98S20S

All data for this body: [vot]

MPC data
Name (number) 1997 EM4 (178370)
a 2.39533
e 0.13939
i / sin(i) 1.7819 / 0.03110
q 2.06146
Q 2.72920
ω 88.3458
Node 158.8337
m 159.8637
n 0.2659
Epoch 2460800.5
nobs 281
nopp 15
Years observed 1997-2024
rms 0.98
Best values
[raw, vot]

Value Standard error
Parent Massalia (20)
 
ap 2.396
ep 0.152
sin(ip) 0.029
G 0.150
H 17.510
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class V
Spectral Class Score 0.680
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
20 Massalia 0 Massalia Novakovic 2019EPSC...13.1671N HCM
20 Massalia 404 Massalia -0.1500 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.3957 0.1516 0.0292 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
17.51 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
V V 0.1134 0.0910 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT