Douglas

02684, 1960 DE, 1960DE, 1972 NY, 1972NY, 1978 PO2, 1978PO2, 1978 RU4, 1978RU4, 1978 SE4, 1978SE4, 1981 AH1, 1981AH1, J60D00E, J72N00Y, J78P02O, J78R04U, J78S04E, J81A01H

All data for this body: [vot]

MPC data
Name (number) Douglas (2684)
a 3.04883
e 0.04818
i / sin(i) 9.9366 / 0.17256
q 2.90194
Q 3.19573
ω 107.5475
Node 150.6601
m 348.5646
n 0.1851
Epoch 2460800.5
nobs 7994
nopp 35
Years observed 1960-2025
rms 0.53
Best values
[raw, vot]

Value Standard error
Parent Eos (221)
 
ap 3.050
ep 0.063
sin(ip) 0.162
G 0.150
H 11.820
Mass
D 15.99 0.242
pV 0.159 0.0081
Value
Rotational Period 4.000
Period quality 2+
Spectral Class K
Spectral Class Score 1.266
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
221 Eos 0 Eos Novakovic 2019EPSC...13.1671N HCM
221 Eos 606 Eos 0.8100 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.0495 0.0634 0.1624 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
15.96 0.255 0.255 Masiero 2011ApJ...741...68M NEATM
16.28 0.780 0.780 Masiero 2012ApJ...759L...8M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.159 0.0084 0.0084 Masiero 2011ApJ...741...68M NEATM
0.167 0.0320 0.0320 Masiero 2012ApJ...759L...8M 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
11.82 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
4.007 2+ Synodic Benitez 2021MPBu...48....8B Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
K 0.211 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT