1998JA2

1979HA4, 1986ET2, 1990ED7, 1999TX323, 21493, J79H04A, J86E02T, J90E07D, J98J02A, J99TW3X

All data for this body: [vot]

MPC data
Name (number) 1998JA2 (21493)
Packed designation 21493
a 2.42303
e 0.13152
i / sin(i) 3.0154 / 0.05260
q 2.10435
Q 2.74172
ω 208.0206
Node 42.5835
m 88.0388
n 0.2613
Epoch 2459600.5
nobs 1904
nopp 20
Years observed 1979-2021
rms 0.64
Best values
[raw, vot]

Value Standard error
Parent Nysa (44)
 
ap 2.422
ep 0.142
sin(ip) 0.044
Value Standard error
G 0.150
H 14.540
Mass
D 7.76 0.059
pV 0.046 0.0073
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
44 Nysa 405 Nysa-Polana 0.0000 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4225 0.1421 0.0438 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.74 1.580 1.580 Masiero 2021PSJ.....2..162M NEATM
6.83 1.910 1.910 Masiero 2020PSJ.....1....5M NEATM
7.77 0.059 0.059 Masiero 2011ApJ...741...68M NEATM
7.92 2.282 2.282 Masiero 2017AJ....154..168M NEATM
9.16 2.170 2.170 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.025 0.0171 0.0171 Masiero 2017AJ....154..168M NEATM
0.037 0.0210 0.0210 Masiero 2012ApJ...759L...8M NEATM
0.051 0.0092 0.0092 Masiero 2011ApJ...741...68M NEATM
0.061 0.0260 0.0460 Masiero 2021PSJ.....2..162M NEATM
0.066 0.0490 0.0490 Masiero 2020PSJ.....1....5M 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
14.54 MPC-2022-01-18 MPC-2022-01-18 Phot