1999 XA181

1999XA181, 97298, J99XI1A

All data for this body: [vot]

MPC data
Name (number) 1999 XA181 (97298)
a 2.80275
e 0.11700
i / sin(i) 8.7370 / 0.15190
q 2.47482
Q 3.13068
ω 104.3336
Node 2.0317
m 117.5614
n 0.2101
Epoch 2460800.5
nobs 1256
nopp 18
Years observed 1999-2025
rms 0.80
Best values
[raw, vot]

Value Standard error
Parent Gefion (1272)
 
ap 2.801
ep 0.131
sin(ip) 0.156
G 0.150
H 15.070
Mass
D 2.63 0.752
pV 0.255 0.1872
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 6.236
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
1272 Gefion 0 Gefion Novakovic 2019EPSC...13.1671N HCM
1272 Gefion 516 Gefion 0.2300 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.8011 0.1311 0.1561 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.63 0.752 0.752 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.255 0.1872 0.1872 Masiero 2011ApJ...741...68M 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
15.07 MPC-2023-12-04 MPC-2023-12-04 Phot
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
D S 0.4113 0.4570 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.2811 0.4570 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
S S 0.7582 0.4570 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT