1989 TT2

1989TT2, 16454, 1991 BR1, 1991BR1, J89T02T, J91B01R

All data for this body: [vot]

MPC data
Name (number) 1989 TT2 (16454)
a 3.11211
e 0.17491
i / sin(i) 6.3005 / 0.10974
q 2.56778
Q 3.65645
ω 232.3653
Node 125.2312
m 187.2247
n 0.1795
Epoch 2460800.5
nobs 3013
nopp 25
Years observed 1989-2025
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent Hygiea (10)
 
ap 3.120
ep 0.137
sin(ip) 0.091
G 0.150
H 13.380
Mass
D 14.97 1.751
pV 0.045 0.0155
Value
Rotational Period
Period quality None
Spectral Class B
Spectral Class Score 2.000
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
10 Hygiea 0 Hygiea Novakovic 2019EPSC...13.1671N HCM
10 Hygiea 601 Hygiea Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1198 0.1366 0.0914 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
13.78 3.703 3.703 Masiero 2017AJ....154..168M NEATM
14.06 3.950 3.950 Masiero 2020PSJ.....1....5M NEATM
15.73 2.300 2.300 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.041 0.0200 0.0200 Masiero 2012ApJ...759L...8M NEATM
0.043 0.0480 0.0480 Masiero 2020PSJ.....1....5M NEATM
0.052 0.0284 0.0284 Masiero 2017AJ....154..168M 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
13.38 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
B C DeMeo-Carry VIS Choi 2023PSJ.....4...49C PHOT