Donbacky

1997 DW, 1997DW, 1999 VR44, 1999VR44, 20200, J97D00W, J99V44R

All data for this body: [vot]

MPC data
Name (number) Donbacky (20200)
a 2.76610
e 0.11367
i / sin(i) 8.2778 / 0.14397
q 2.45169
Q 3.08051
ω 266.2936
Node 337.6480
m 327.3669
n 0.2142
Epoch 2460800.5
nobs 2578
nopp 23
Years observed 1990-2025
rms 0.71
Best values
[raw, vot]

Value Standard error
Parent Gefion (1272)
 
ap 2.768
ep 0.136
sin(ip) 0.158
G 0.150
H 14.280
Mass
D 4.10 1.519
pV 0.182 0.1510
Value
Rotational Period
Period quality None
Spectral Class L
Spectral Class Score 0.356
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
1272 Gefion 0 Gefion Novakovic 2019EPSC...13.1671N HCM
1272 Gefion 516 Gefion -0.3600 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.7675 0.1357 0.1576 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.10 1.519 1.519 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.182 0.1510 0.1510 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
14.28 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
L L 0.0593 0.0593 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT