Postma

11184, 1997 HW5, 1997HW5, 1998 HJ9, 1998HJ9, 4361 T-1, 4361T-1, J97H05W, J98H09J, T1S4361

All data for this body: [vot]

MPC data
Name (number) Postma (11184)
a 3.03102
e 0.15794
i / sin(i) 12.7027 / 0.21989
q 2.55229
Q 3.50974
ω 205.2367
Node 166.7052
m 269.7976
n 0.1868
Epoch 2460800.5
nobs 4000
nopp 26
Years observed 1971-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent
 
ap 3.029
ep 0.130
sin(ip) 0.212
G 0.150
H 12.870
Mass
D 15.38 0.041
pV 0.058 0.0024
Value
Rotational Period 3.530
Period quality 2
Spectral Class C
Spectral Class Score 13.313
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0287 0.1304 0.2117 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
15.23 0.230 0.230 Masiero 2012ApJ...759L...8M NEATM
15.33 0.060 0.060 Masiero 2014ApJ...791..121M NEATM
15.43 0.058 0.058 Masiero 2011ApJ...741...68M NEATM
16.47 4.630 4.630 Nugent 2016AJ....152...63N NEATM
16.87 5.280 5.280 Nugent 2016AJ....152...63N NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.040 0.0300 0.0300 Nugent 2016AJ....152...63N NEATM
0.050 0.0200 0.0200 Nugent 2016AJ....152...63N NEATM
0.057 0.0026 0.0026 Masiero 2011ApJ...741...68M NEATM
0.069 0.0090 0.0090 Masiero 2012ApJ...759L...8M NEATM
0.070 0.0100 0.0100 Masiero 2014ApJ...791..121M 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
12.87 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
3.535 2 Synodic Pravec LCDB Lightcurve
4.06117 2 Sidereal Durech 2023A&A...675A..24D Model
5.3 2 Synodic Erasmus 2019ApJS..242...15E Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C 0.123 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
C 0.80 Bus VIS Carvano 2010A&A...510A..43C PHOT
C 0.998000 Bus-DeMeo VIS Erasmus 2019ApJS..242...15E PHOT
C C 0.4979 0.1230 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S C 0.0191 0.1230 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT