1999GQ21

17929, 1987KY1, 1997AL22, J87K01Y, J97A22L, J99G21Q

All data for this body: [vot]

MPC data
Name (number) 1999GQ21 (17929)
Packed designation 17929
a 2.54817
e 0.17033
i / sin(i) 15.4321 / 0.26610
q 2.11414
Q 2.98220
ω 262.4884
Node 55.1366
m 124.2267
n 0.2423
Epoch 2459600.5
nobs 2132
nopp 21
Years observed 1987-2022
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent Maria (170)
 
ap 2.549
ep 0.116
sin(ip) 0.259
Value Standard error
G 0.150
H 13.500
Mass
D 5.43 0.219
pV 0.217 0.0386
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
170 Maria 506 Maria -0.0500 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5494 0.1157 0.2589 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
5.43 0.219 0.219 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.217 0.0386 0.0386 Masiero 2011ApJ...741...68M NEATM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2022-01-18 MPC-2022-01-18 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
13.50 MPC-2022-01-18 MPC-2022-01-18 Phot