Gracecook

2000 EY156, 2000EY156, 2001 HS57, 2001HS57, 50739, K00EF6Y, K01H57S

All data for this body: [vot]

MPC data
Name (number) Gracecook (50739)
a 2.55795
e 0.22780
i / sin(i) 14.4288 / 0.24918
q 1.97524
Q 3.14065
ω 254.4845
Node 95.6411
m 192.4281
n 0.2409
Epoch 2460800.5
nobs 2410
nopp 22
Years observed 1997-2025
rms 0.75
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.558
ep 0.169
sin(ip) 0.239
G 0.150
H 13.890
Mass
D 4.82 0.097
pV 0.261 0.0181
Value
Rotational Period 7.720
Period quality 2
Spectral Class S
Spectral Class Score 7.430
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5583 0.1686 0.2391 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.75 0.120 0.120 Masiero 2012ApJ...759L...8M NEATM
4.94 0.165 0.165 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.259 0.0290 0.0290 Masiero 2012ApJ...759L...8M NEATM
0.263 0.0231 0.0231 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
13.89 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
7.725 2 Synodic Waszczak 2015AJ....150...75W Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
S 0.16 Bus VIS Carvano 2010A&A...510A..43C PHOT
S S 0.8516 0.8516 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT