1999 XL204

1999XL204, 43179, J99XK4L

All data for this body: [vot]

MPC data
Name (number) 1999 XL204 (43179)
a 3.14317
e 0.07574
i / sin(i) 17.0912 / 0.29390
q 2.90511
Q 3.38123
ω 235.2830
Node 74.2429
m 354.8513
n 0.1769
Epoch 2460800.5
nobs 2775
nopp 23
Years observed 1998-2025
rms 0.68
Best values
[raw, vot]

Value Standard error
Parent Ursula (375)
 
ap 3.143
ep 0.065
sin(ip) 0.276
G 0.150
H 13.410
Mass
D 11.69 0.066
pV 0.074 0.0099
Value
Rotational Period 9.838
Period quality 2
Spectral Class C
Spectral Class Score 4.378
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
375 Ursula 631 Ursula Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1428 0.0646 0.2763 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
11.69 0.066 0.066 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.074 0.0099 0.0099 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
13.41 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
9.8383 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C 0.601 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
C C 0.1286 0.1286 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT