1997 GM21

1997GM21, 1998 SE115, 1998SE115, 43981, J97G21M, J98SB5E

All data for this body: [vot]

MPC data
Name (number) 1997 GM21 (43981)
a 2.74452
e 0.20233
i / sin(i) 1.0789 / 0.01883
q 2.18921
Q 3.29983
ω 287.8902
Node 355.3505
m 14.3172
n 0.2168
Epoch 2460800.5
nobs 1188
nopp 22
Years observed 1997-2025
rms 0.82
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.744
ep 0.202
sin(ip) 0.030
G 0.150
H 15.370
Mass
D
pV
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 21.736
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
177 Irma -1 Irma -1.0000 Nesvorny 2024ApJS..274...25N HCM-2024
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7439 0.2019 0.0304 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
15.37 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
D S 0.0419 0.4930 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
Q 0.09 Bus VIS Carvano 2010A&A...510A..43C PHOT
Q 0.204 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S S 0.5094 0.4930 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.5156 0.4930 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.5356 0.4930 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.6355 0.4930 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.6981 0.4930 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.7284 0.4930 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V S 0.2726 0.4930 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
V S 0.4613 0.4930 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT