1999 SY12

1999SY12, 40730, J99S12Y

All data for this body: [vot]

MPC data
Name (number) 1999 SY12 (40730)
a 3.16039
e 0.26636
i / sin(i) 19.4083 / 0.33230
q 2.31859
Q 4.00218
ω 253.9424
Node 126.9425
m 201.8166
n 0.1754
Epoch 2460800.5
nobs 2080
nopp 23
Years observed 1998-2025
rms 0.77
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.166
ep 0.212
sin(ip) 0.331
G 0.150
H 13.550
Mass
D 10.48 0.105
pV 0.076 0.0045
Value
Rotational Period
Period quality None
Spectral Class D
Spectral Class Score 13.301
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1656 0.2120 0.3307 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
10.48 0.105 0.105 Masiero 2011ApJ...741...68M NEATM
12.49 3.605 3.605 Masiero 2017AJ....154..168M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.040 0.0286 0.0286 Masiero 2017AJ....154..168M NEATM
0.077 0.0046 0.0046 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
13.55 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 DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
D 0.67 Bus VIS Carvano 2010A&A...510A..43C PHOT
D D 0.7737 0.8310 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
D D 0.8864 0.8310 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT