Polyhymnia

00033, 1854 UB, 1854UB, 1887 HA, 1887HA, 1938 FE, 1938FE, 1953 AK, 1953AK, 1957 YL, 1957YL, 1963 DG, 1963DG, 1976 YT7, 1976YT7, I54U00B, I87H00A, J38F00E, J53A00K, J57Y00L, J63D00G, J76Y07T

All data for this body: [vot]

MPC data
Name (number) Polyhymnia (33)
a 2.87529
e 0.33229
i / sin(i) 1.8510 / 0.03230
q 1.91986
Q 3.83072
ω 338.7587
Node 8.3613
m 66.6457
n 0.2022
Epoch 2460800.5
nobs 4949
nopp 75
Years observed 1856-2025
rms 0.75
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.866
ep 0.297
sin(ip) 0.035
G 0.150
H 8.480
Mass
D 53.74 0.830
pV 0.254 0.0269
Value
Rotational Period 18.600
Period quality 3
Spectral Class S
Spectral Class Score 49.300
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.8661 0.2973 0.0348 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
49.82 4.980 4.980 Ali-Lagoa 2018A&A...612A..85A NEATM
52.93 2.300 2.300 Masiero 2012ApJ...759L...8M NEATM
53.98 0.910 0.910 Usui 2011PASJ...63.1117U NEATM
54.39 11.840 11.840 Nugent 2016AJ....152...63N NEATM
55.52 11.100 11.100 Ali-Lagoa 2018A&A...612A..85A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.230 0.1300 0.1300 Nugent 2016AJ....152...63N NEATM
0.240 0.0320 0.0320 Masiero 2012ApJ...759L...8M NEATM
0.255 0.1020 0.1020 Ali-Lagoa 2018A&A...612A..85A NEATM
0.316 0.0630 0.0630 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
8.48 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
18.601 2 Synodic Zappala 1982Icar...52..196Z Lightcurve
18.602 3 Synodic Behrend LCDB Lightcurve
18.602 3 Synodic Pilcher 2020MPBu...47...34P Lightcurve
18.604 2 Synodic Behrend LCDB Lightcurve
18.604 3 Synodic Ferrero 2012MPBu...39..138F Lightcurve
18.608 3 Synodic Pilcher 2011MPBu...38..130P Lightcurve
18.6088 2 Sidereal Durech 2023A&A...675A..24D Model
18.60888 2 Sidereal Franco 2020MPBu...47..120F Model
18.609 2 Synodic Pilcher 2009MPBu...36...25P Lightcurve
18.6092 2 Sidereal Durech 2020A&A...643A..59D Model
18.61 3 Synodic Pilcher 2018MPBu...45..356P Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S Bus-DeMeo VISNIR DeMeo 2009Icar..202..160D SPEC
S Bus VIS Lazzaro 2004Icar..172..179L SPEC
S Tholen VIS Lazzaro 2004Icar..172..179L SPEC
S 0.940000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
S 0.960000 Mahlke VISNIR Mahlke 2022A&A...665A..26M SPEC
S 1.000000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
Sp Howell VISNIR Howell 1994JGR....9910847H PHOT
Sq Bus VIS Bus 2002Icar..158..146B SPEC