1999XP31

1969OT, 21996, J69O00T, J99X31P

All data for this body: [vot]

MPC data
Name (number) 1999XP31 (21996)
Packed designation 21996
a 2.56341
e 0.13699
i / sin(i) 16.0209 / 0.27599
q 2.21225
Q 2.91457
ω 226.5112
Node 114.1345
m 251.9096
n 0.2401
Epoch 2459600.5
nobs 2475
nopp 23
Years observed 1951-2022
rms 0.58
Best values
[raw, vot]

Value Standard error
Parent Maria (170)
 
ap 2.563
ep 0.089
sin(ip) 0.260
Value Standard error
G 0.150
H 13.000
Mass
D 6.75 0.135
pV 0.382 0.0352
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
170 Maria 506 Maria 0.1400 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5628 0.0889 0.2601 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Jan-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
6.40 0.350 0.350 Masiero 2012ApJ...759L...8M NEATM
6.81 0.146 0.146 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.359 0.0450 0.0450 Masiero 2012ApJ...759L...8M NEATM
0.418 0.0566 0.0566 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
13.00 MPC-2022-01-18 MPC-2022-01-18 Phot