Summa

01928, 1938 SO, 1938SO, 1969 PA, 1969PA, J38S00O, J69P00A

All data for this body: [vot]

MPC data
Name (number) Summa (1928)
a 2.47844
e 0.20263
i / sin(i) 4.5742 / 0.07975
q 1.97624
Q 2.98064
ω 158.0175
Node 180.3120
m 85.7044
n 0.2526
Epoch 2460800.5
nobs 5203
nopp 31
Years observed 1938-2025
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.476
ep 0.165
sin(ip) 0.082
G 0.150
H 12.800
Mass
D 9.33 0.170
pV 0.160 0.0435
Value
Rotational Period 6.854
Period quality 3
Spectral Class S
Spectral Class Score 21.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4762 0.1654 0.0817 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
9.33 0.170 0.170 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.160 0.0435 0.0435 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
12.80 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
6.8549 3 Synodic Hills 2013MPBu...40...12H Lightcurve
6.855 2+ Synodic Owings 2013MPBu...40..104O Lightcurve
9.66 1 Synodic Binzel 1987Icar...72..135B 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 VIS Bourdelle de Micas 2024A&A...682A..64B SPEC
S 1.000 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT