Gressmann

04396, 1935 NF, 1935NF, 1955 QR, 1955QR, 1955 RJ, 1955RJ, 1975 VR2, 1975VR2, 1978 OA, 1978OA, 1981 JH, 1981JH, J35N00F, J55Q00R, J55R00J, J75V02R, J78O00A, J81J00H

All data for this body: [vot]

MPC data
Name (number) Gressmann (4396)
a 2.21913
e 0.19172
i / sin(i) 3.7470 / 0.06535
q 1.79367
Q 2.64459
ω 250.8981
Node 46.9044
m 55.1814
n 0.2981
Epoch 2460800.5
nobs 4109
nopp 30
Years observed 1955-2025
rms 0.65
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.220
ep 0.154
sin(ip) 0.061
G 0.150
H 13.910
Mass
D 4.86 0.078
pV 0.287 0.0377
Value
Rotational Period 30.650
Period quality 2
Spectral Class B
Spectral Class Score 5.000
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.2196 0.1537 0.0608 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
4.72 0.111 0.111 Masiero 2011ApJ...741...68M NEATM
5.00 nan nan Ali-Lagoa 2016A&A...591A..14A NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.287 0.0377 0.0377 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
13.91 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
30.655 2 Sidereal Durech 2023A&A...675A..24D Model
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
A A 0.5768 0.5768 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT
B Bus VIS Bus 2002Icar..158..146B SPEC
K B 0.450000 0.390000 Mahlke VIS Mahlke 2022A&A...665A..26M SPEC
S 0.607 Bus-Demeo VIS Sergeyev 2022A&A...658A.109S PHOT