1999 GR18

1999GR18, 1991 KY1, 1991KY1, 59434, J91K01Y, J99G18R

All data for this body: [vot]

MPC data
Name (number) 1999 GR18 (59434)
a 2.59096
e 0.21444
i / sin(i) 12.4687 / 0.21591
q 2.03534
Q 3.14658
ω 83.0422
Node 67.1776
m 118.3479
n 0.2363
Epoch 2460800.5
nobs 2486
nopp 20
Years observed 1991-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.592
ep 0.243
sin(ip) 0.212
G 0.150
H 14.870
Mass
D 6.57 0.880
pV 0.044 0.0113
Value
Rotational Period 151.690
Period quality 2
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5924 0.2430 0.2120 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.16 1.970 1.970 Masiero 2021PSJ.....2..162M NEATM
6.27 1.870 1.870 Nugent 2016AJ....152...63N NEATM
6.70 1.335 1.335 Masiero 2017AJ....154..168M NEATM
7.23 2.320 2.320 Masiero 2021PSJ.....2..162M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.037 0.0160 0.0290 Masiero 2021PSJ.....2..162M NEATM
0.043 0.0186 0.0186 Masiero 2017AJ....154..168M NEATM
0.050 0.0200 0.0200 Nugent 2016AJ....152...63N NEATM
0.052 0.0280 0.0630 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
14.87 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
151.691 2 Synodic Pal 2020ApJS..247...26P Lightcurve