1999 JM57

1999JM57, 1976 EO, 1976EO, 1985 VV1, 1985VV1, 1996 VU30, 1996VU30, 1998 FZ98, 1998FZ98, 27231, J76E00O, J85V01V, J96V30U, J98F98Z, J99J57M

All data for this body: [vot]

MPC data
Name (number) 1999 JM57 (27231)
a 3.09465
e 0.26278
i / sin(i) 14.1357 / 0.24422
q 2.28142
Q 3.90787
ω 219.6633
Node 223.8220
m 60.1838
n 0.1810
Epoch 2460800.5
nobs 3941
nopp 25
Years observed 1976-2025
rms 0.64
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.106
ep 0.245
sin(ip) 0.249
G 0.150
H 12.880
Mass
D 8.01 0.675
pV 0.251 0.0442
Value
Rotational Period 45.000
Period quality 2
Spectral Class L
Spectral Class Score 5.922
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1061 0.2446 0.2494 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
8.01 0.675 0.675 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.251 0.0442 0.0442 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
12.88 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
45.04 2 Synodic Pal 2020ApJS..247...26P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
K K 0.4552 0.2000 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
L 0.987 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
S K 0.0904 0.2000 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
X K 0.3784 0.2000 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT