1999 TW31

1999TW31, 1994 RD9, 1994RD9, 40789, J94R09D, J99T31W

All data for this body: [vot]

MPC data
Name (number) 1999 TW31 (40789)
a 2.86096
e 0.08216
i / sin(i) 1.1944 / 0.02084
q 2.62589
Q 3.09603
ω 136.9682
Node 226.6812
m 114.8268
n 0.2037
Epoch 2460800.5
nobs 1298
nopp 22
Years observed 1994-2025
rms 0.81
Best values
[raw, vot]

Value Standard error
Parent Koronis (158)
 
ap 2.861
ep 0.043
sin(ip) 0.037
G 0.150
H 15.070
Mass
D 3.44 0.794
pV 0.180 0.0763
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 5.000
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
158 Koronis 0 Koronis Novakovic 2019EPSC...13.1671N HCM
832 Karin 0 Karin Novakovic 2019EPSC...13.1671N HCM
158 Koronis 605 Koronis -0.0700 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
832 Karin 610 Karin -1.1000 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.8615 0.0432 0.0370 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.44 0.794 0.794 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.180 0.0763 0.0763 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
15.07 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 D 0.5008 0.4560 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S 1.000000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
SQ 0.14 Bus VIS Carvano 2010A&A...510A..43C PHOT
X D 0.0912 0.4560 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT