1998 TR1

1998TR1, 1999 XR21, 1999XR21, 40228, J98T01R, J99X21R

All data for this body: [vot]

MPC data
Name (number) 1998 TR1 (40228)
a 2.69436
e 0.22788
i / sin(i) 12.7321 / 0.22039
q 2.08037
Q 3.30835
ω 179.6203
Node 115.8749
m 27.9019
n 0.2229
Epoch 2460800.5
nobs 2042
nopp 23
Years observed 1990-2025
rms 0.74
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.695
ep 0.219
sin(ip) 0.191
G 0.150
H 14.220
Mass
D 3.67 0.248
pV 0.329 0.0543
Value
Rotational Period 3.000
Period quality 2
Spectral Class S
Spectral Class Score 5.437
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6952 0.2190 0.1913 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
3.67 0.248 0.248 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.329 0.0543 0.0543 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
14.22 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
3.399 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
3.4 2 Synodic Chang 2015ApJS..219...27C Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
L 0.90 Bus VIS Carvano 2010A&A...510A..43C PHOT
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S S 0.5729 0.5729 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT