1999 JU121
1999JU121, 2000 SJ143, 2000SJ143, 42813, J99JC1U, K00SE3J
All data for this body: [vot]
MPC data
| Name (number) |
1999 JU121 (42813) |
| a |
2.28850 |
| e |
0.02646 |
| i / sin(i) |
9.5395 /
0.16573
|
| q |
2.22795
|
| Q |
2.34906
|
| ω |
300.4696 |
| Node |
252.8018 |
| m |
229.0492 |
| n |
0.2847 |
| Epoch |
2460800.5 |
| nobs |
3827 |
| nopp |
21 |
| Years observed |
1951-2025 |
| rms |
0.61 |
Best values
|
Value |
Standard error |
| Parent |
|
|
| |
|
|
| ap |
2.288 |
|
| ep |
0.082 |
|
| sin(ip) |
0.176 |
|
| G |
0.150 |
|
| H |
14.560 |
|
| Mass |
|
|
| D |
3.12 |
0.111 |
| pV |
0.549 |
0.0318 |
|
Value |
| Rotational Period |
143.210 |
| Period quality |
2 |
| Spectral Class |
S |
| Spectral Class Score |
1.896 |
Proper elements data
| ap |
ep |
sin(ip) |
Author |
Reference |
Method |
| 2.2883 |
0.0817 |
0.1762 |
Novakovic_Radovic_Todovic |
2003A&A...403.1165K |
Numeric-Nov-2024 |
Diameter data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 3.12 |
0.111 |
0.111 |
Masiero |
2011ApJ...741...68M |
NEATM |
Albedo data
| Value |
Uncertainty up |
Uncertainty down |
Author |
Reference |
Method |
| 0.549 |
0.0318 |
0.0318 |
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 |
| 14.56 |
|
|
MPC-2023-12-04 |
MPC-2023-12-04 |
Phot |
Periods
| Value |
Quality |
Side real or Synodic |
Author |
Reference |
Method |
| 143.213 |
2 |
Synodic |
Pal |
2020ApJS..247...26P |
Lightcurve |
Spectral Class Data
| Class 1 |
Class 2 |
Probability of Class 1 |
Probability of Class 2 |
Taxonomy |
Wavelength |
Author |
Reference |
Method |
| S |
|
0.316 |
|
Bus-Demeo |
VIS |
Sergeyev |
2022A&A...658A.109S |
PHOT |