1999 XE171

1999XE171, 1977 DY2, 1977DY2, 49913, J77D02Y, J99XH1E

All data for this body: [vot]

MPC data
Name (number) 1999 XE171 (49913)
a 2.22743
e 0.10492
i / sin(i) 3.9242 / 0.06844
q 1.99374
Q 2.46113
ω 87.5646
Node 347.2586
m 244.5404
n 0.2965
Epoch 2460800.5
nobs 2294
nopp 19
Years observed 1977-2025
rms 0.63
Best values
[raw, vot]

Value Standard error
Parent Flora (8)
 
ap 2.227
ep 0.126
sin(ip) 0.068
G 0.150
H 15.710
Mass
D 1.95 0.200
pV 0.351 0.0440
Value
Rotational Period
Period quality None
Spectral Class S
Spectral Class Score 5.406
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
8 Flora 402 Flora 0.1200 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2273 0.1262 0.0677 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.95 0.200 0.200 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.351 0.0440 0.0440 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
15.71 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
S 0.901 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT