(19521) Chaos
Object
| Object |
(19521) Chaos |
| Diameter(1) |
600 km |
| Dynamic class(1) |
cubewano |
| Absolute magnitude |
4.64 |
| G slop |
0.15 |
Orbital elements
| Epoch (Julian date) |
2459800.5 |
| Semi major axis |
45.758134 ± 0.000261 au |
| Eccentricity |
0.103211965 ± 0.000003675 |
| Inclination |
12.018379276 ± 0.000022881 ° |
| Longitude of ascending node |
49.899997 ± 0.000091 ° |
| Argument of perihelia |
55.647919 ± 0.001727 ° |
| Mean anomaly |
347.188446 ± 0.001449 ° |
| Orbital period |
309.54 yr |
Ephemeris & Observations
| Ephemeris version |
NIMAv11 |
| Observation file (documentation) |
omc_ast_NIMAv11.txt |
| bsp file |
19521_Chaos_nima_v11.bsp |
| Date of first observation |
1991-10-17 |
| Date of last observation |
2023-03-29 |
| Number of observations used in the fit |
262 |
| Number of rejected observations |
13 |
| Number of DES observations |
0 |
| Number of MPC observations |
167 |
| Number of unpublished observations |
108 |
| RMS of observations |
0.291 arcsec |
Residuals
Residuals in right ascension and declination compared to NIMAv11 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.
Orbit quality
| date |
σα (arcsec) |
σδ (arcsec) |
| 2023-01 |
0.004 |
0.003 |
| 2023-07 |
0.008 |
0.004 |
| 2024-01 |
0.009 |
0.005 |
| 2024-07 |
0.012 |
0.006 |
| 2025-01 |
0.014 |
0.007 |
| 2025-07 |
0.018 |
0.008 |
| 2026-01 |
0.020 |
0.010 |
| 2026-07 |
0.024 |
0.011 |
| 2027-01 |
0.027 |
0.013 |
Ephemeris comparison
Difference between NIMAv11 and JPL16 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