1998 HW

1998HW, 17827, 1982 VK2, 1982VK2, J82V02K, J98H00W

All data for this body: [vot]

MPC data
Name (number) 1998 HW (17827)
a 2.74760
e 0.15872
i / sin(i) 14.1435 / 0.24435
q 2.31150
Q 3.18370
ω 293.7335
Node 188.2418
m 45.7804
n 0.2164
Epoch 2460800.5
nobs 3721
nopp 27
Years observed 1981-2025
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.748
ep 0.181
sin(ip) 0.251
G 0.150
H 13.260
Mass
D 6.24 0.270
pV 0.261 0.0440
Value
Rotational Period 7.066
Period quality 2
Spectral Class S
Spectral Class Score 14.434
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7475 0.1806 0.2514 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.24 0.270 0.270 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.261 0.0440 0.0440 Masiero 2012ApJ...759L...8M 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
13.26 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
7.0666 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.61 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.8693 0.9530 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.9997 0.9530 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT