(12929) Periboea
Object
| Object |
(12929) Periboea |
| Diameter(1) |
62 km |
| Dynamic class(1) |
trojan |
| Absolute magnitude |
10.13 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2459800.5 |
| Semi major axis |
5.245265 ± 0.000000 au |
| Eccentricity |
0.040732755 ± 0.000000019 |
| Inclination |
43.424148895 ± 0.000000326 ° |
| Longitude of ascending node |
200.217122 ± 0.000001 ° |
| Argument of perihelia |
129.100716 ± 0.000012 ° |
| Mean anomaly |
346.493101 ± 0.000011 ° |
| Orbital period |
12.01 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv5 |
| Observation file (documentation) |
omc_ast_NIMAv5.txt |
| bsp file |
12929_Periboea_nima_v5.bsp |
| Date of first observation |
1953-09-16 |
| Date of last observation |
2023-08-11 |
| Number of observations used in the fit |
3231 |
| Number of rejected observations |
18 |
| Number of DES observations |
13 |
| Number of MPC observations |
2940 |
| Number of unpublished observations |
16 |
| RMS of observations |
0.122 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv5 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date |
σα (arcsec) |
σδ (arcsec) |
| 2023-01 |
0.009 |
0.002 |
| 2023-07 |
0.015 |
0.004 |
| 2024-01 |
0.015 |
0.005 |
| 2024-07 |
0.019 |
0.007 |
| 2025-01 |
0.021 |
0.010 |
| 2025-07 |
0.021 |
0.008 |
| 2026-01 |
0.026 |
0.012 |
| 2026-07 |
0.023 |
0.007 |
| 2027-01 |
0.031 |
0.009 |
Ephemeris comparison
Difference between NIMAv5 and JPL50 in right ascension (weighted by cos δ) and in declination.
Gray area represents the 1-σ uncertainty of NIMA ephemeris. Green dots represent the DES observations.
Previous NIMA versions