Irwin
03959, 1954 UN2, 1954UN2, 1981 TP4, 1981TP4, 1981 UX10, 1981UX10, 1986 CY1, 1986CY1, J54U02N, J81T04P, J81U10X, J86C01Y
All data for this body: [vot]
MPC data
| Name (number) |
Irwin (3959) |
| a |
2.25922 |
| e |
0.18731 |
| i / sin(i) |
3.2851 /
0.05731
|
| q |
1.83606
|
| Q |
2.68239
|
| ω |
198.3453 |
| Node |
210.7841 |
| m |
269.4609 |
| n |
0.2902 |
| Epoch |
2460800.5 |
| nobs |
3853 |
| nopp |
27 |
| Years observed |
1954-2025 |
| rms |
0.69 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.259 |
|
| ep |
0.181 |
|
| sin(ip) |
0.069 |
|
| G |
0.150 |
|
| H |
14.050 |
|
| Mass |
|
|
| D |
4.14 |
0.331 |
| pV |
0.259 |
0.0886 |
|
Value |
| Rotational Period |
3.259 |
| Period quality |
3 |
| Spectral Class |
S |
| Spectral Class Score |
11.983 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.2589 |
0.1806 |
0.0692 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 4.14 |
0.331 |
0.331 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.259 |
0.0886 |
0.0886 |
Masiero |
2011ApJ...741...68M |
NEATM |
G data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.15 |
|
|
MPC-2023-12-94 |
MPC-2023-12-94 |
Phot |
H data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 14.05 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |
Periods
| Value |
Quality |
Side real or Synodic |
Author |
Reference |
Method |
| 3.2591 |
3 |
Synodic |
Benishek |
LCDB |
Lightcurve |
Spectral Class Data
| Class 1 |
Class 2 |
Probability of Class 1 |
Probability of Class 2 |
Taxonomy |
Wavelength |
Author |
Reference |
Method |
| S |
S |
0.9979 |
0.9990 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |
| S |
S |
0.9993 |
0.9990 |
Bus-Demeo |
VIS |
Sergeyev |
2021A&A...652A..59S |
PHOT |