McDonalda

00991, 1922 UC, 1922UC, 1949 PF, 1949PF, 1950 WG, 1950WG, 1953 GT1, 1953GT1, 1975 EE6, 1975EE6, J22U00C, J49P00F, J50W00G, J53G01T, J75E06E

All data for this body: [vot]

MPC data
Name (number) McDonalda (991)
a 3.13554
e 0.16238
i / sin(i) 2.0693 / 0.03611
q 2.62638
Q 3.64470
ω 253.5548
Node 63.1815
m 199.2063
n 0.1775
Epoch 2460800.5
nobs 5451
nopp 45
Years observed 1936-2025
rms 0.69
Best values
[raw, vot]

Value Standard error
Parent Themis (24)
 
ap 3.144
ep 0.140
sin(ip) 0.023
G 0.150
H 11.180
Mass
D 36.36 0.420
pV 0.050 0.0028
Value
Rotational Period
Period quality None
Spectral Class C
Spectral Class Score 8.573
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
991 McDonalda -1 McDonalda -1.0000 Nesvorny 2024ApJS..274...25N HCM-2024
24 Themis 0 Themis Novakovic 2019EPSC...13.1671N HCM
24 Themis 602 Themis 0.2300 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
3.1437 0.1404 0.0232 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
29.18 9.060 9.060 Masiero 2017AJ....154..168M NEATM
30.07 6.010 6.010 Ali-Lagoa 2018A&A...612A..85A NEATM
31.40 1.070 1.070 Usui 2011PASJ...63.1117U NEATM
31.41 2.100 2.100 Tedesco 2002AJ....123.1056T STM
31.62 1.316 1.316 Ryan&Woodward 2010AJ....140..933R IRAS-STM
31.66 11.470 11.470 Nugent 2016AJ....152...63N NEATM
32.90 6.580 6.580 Ali-Lagoa 2018A&A...612A..85A NEATM
33.49 9.580 9.580 Nugent 2016AJ....152...63N NEATM
35.57 11.674 11.674 Masiero 2017AJ....154..168M NEATM
38.56 0.514 0.514 Masiero 2011ApJ...741...68M NEATM
39.28 3.009 3.009 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.040 0.0046 0.0046 Masiero 2011ApJ...741...68M NEATM
0.043 0.0060 0.0060 Ryan&Woodward 2010AJ....140..933R IRAS-NEATM
0.050 0.0500 0.0500 Nugent 2016AJ....152...63N NEATM
0.059 0.0344 0.0344 Masiero 2017AJ....154..168M NEATM
0.060 0.0500 0.0500 Nugent 2016AJ....152...63N NEATM
0.061 0.0240 0.0240 Ali-Lagoa 2018A&A...612A..85A NEATM
0.063 0.0054 0.0054 Ryan&Woodward 2010AJ....140..933R IRAS-STM
0.064 0.0090 0.0090 Tedesco 2002AJ....123.1056T STM
0.069 0.0518 0.0518 Masiero 2017AJ....154..168M NEATM
0.073 0.0290 0.0290 Ali-Lagoa 2018A&A...612A..85A 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
11.18 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
B 0.989 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT
C DeMeo-Carry VIS DeMeo 2013Icar..226..723D PHOT
C None Bus VIS Carvano 2010A&A...510A..43C PHOT
C C 0.7622 0.7622 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT