1998 HP42

1998HP42, 16943, 1958 TR, 1958TR, 1975 YK, 1975YK, 1985 FY2, 1985FY2, 1989 CF9, 1989CF9, J58T00R, J75Y00K, J85F02Y, J89C09F, J98H42P

All data for this body: [vot]

MPC data
Name (number) 1998 HP42 (16943)
a 2.59759
e 0.17597
i / sin(i) 14.1881 / 0.24511
q 2.14049
Q 3.05468
ω 339.3706
Node 69.5275
m 303.1796
n 0.2354
Epoch 2460800.5
nobs 3374
nopp 27
Years observed 1958-2025
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.597
ep 0.168
sin(ip) 0.223
G 0.150
H 12.740
Mass
D 8.14 0.060
pV 0.226 0.0218
Value
Rotational Period 16.760
Period quality 3-
Spectral Class S
Spectral Class Score 6.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5974 0.1679 0.2231 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
8.09 0.130 0.130 Masiero 2014ApJ...791..121M NEATM
8.15 0.067 0.067 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.222 0.0316 0.0316 Masiero 2011ApJ...741...68M NEATM
0.230 0.0300 0.0300 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
12.74 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
16.764 3- Synodic Marchini 2018MPBu...45..195M Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT