1997 AO4

1997AO4, 11639, 1991 YJ2, 1991YJ2, J91Y02J, J97A04O

All data for this body: [vot]

MPC data
Name (number) 1997 AO4 (11639)
a 2.74149
e 0.10640
i / sin(i) 5.8975 / 0.10275
q 2.44981
Q 3.03318
ω 186.7054
Node 124.7786
m 260.8962
n 0.2171
Epoch 2460800.5
nobs 4289
nopp 25
Years observed 1991-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent Nemesis (128)
 
ap 2.742
ep 0.089
sin(ip) 0.085
G 0.150
H 13.550
Mass
D 9.47 0.217
pV 0.103 0.0125
Value
Rotational Period 3.500
Period quality 2
Spectral Class C
Spectral Class Score 3.820
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
128 Nemesis 504 Nemesis -0.7000 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7423 0.0890 0.0852 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
9.47 0.217 0.217 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.103 0.0125 0.0125 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
13.55 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
17.1092 2 Synodic Pal 2020ApJS..247...26P Lightcurve
3.58 2 Synodic Chang 2016ApJS..227...20C Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C 0.91 Bus VIS Carvano 2010A&A...510A..43C PHOT
X X 0.4862 0.4862 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT