1998 HC51

1998HC51, 39995, J98H51C

All data for this body: [vot]

MPC data
Name (number) 1998 HC51 (39995)
a 2.63007
e 0.08666
i / sin(i) 13.5601 / 0.23447
q 2.40214
Q 2.85799
ω 97.0943
Node 218.5809
m 28.6295
n 0.2311
Epoch 2460800.5
nobs 1851
nopp 23
Years observed 1994-2025
rms 0.73
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.630
ep 0.051
sin(ip) 0.247
G 0.150
H 14.740
Mass
D 8.31 0.139
pV 0.041 0.0029
Value
Rotational Period 4.505
Period quality 2
Spectral Class C
Spectral Class Score 5.376
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.6303 0.0508 0.2468 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.19 1.850 1.850 Masiero 2021PSJ.....2..162M NEATM
8.32 0.139 0.139 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.040 0.0029 0.0029 Masiero 2011ApJ...741...68M NEATM
0.064 0.0260 0.0450 Masiero 2021PSJ.....2..162M 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
14.74 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.5039 2 Sidereal Durech 2023A&A...675A..24D Model
4.50522 2 Synodic Pal 2020ApJS..247...26P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C 0.896 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT