(230965) 2004XA192


Object

Object (230965) 2004XA192
Diameter(1) 339 km
Dynamic class(1) otherTNO
Absolute magnitude 4.30
G slop 0.15
(1) Data from the johnston archive list.

Orbital elements

Epoch (Julian date) 2460600.5
Semi major axis 47.438972 ± 0.001822 au
Eccentricity 0.252433066 ± 0.000023916
Inclination 38.112895133 ± 0.000038601 °
Longitude of ascending node 328.646397 ± 0.000078 °
Argument of perihelia 131.913339 ± 0.001847 °
Mean anomaly 6.496579 ± 0.000942 °
Orbital period 326.75 yr

Ephemeris & Observations

Ephemeris version NIMAv7
Observation file (documentation) omc_ast_NIMAv7.txt
bsp file 230965_2004XA192_nima_v7.bsp
Date of first observation 1989-08-29
Date of last observation 2024-04-25
Number of observations used in the fit 555
Number of rejected observations 7
Number of DES observations 0
Number of MPC observations 535
Number of unpublished observations 27
RMS of observations 0.188 arcsec

Residuals

residual plot

Residuals in right ascension and declination compared to NIMAv7 ephemeris.
Colours indicate the estimated precision in arcsec used as weights in the fitting process.

Orbit quality

date σα (arcsec) σδ (arcsec)
2024-01 0.082 0.079
2024-07 0.076 0.094
2025-01 0.100 0.098
2025-07 0.091 0.114
2026-01 0.119 0.121
2026-07 0.107 0.137
2027-01 0.139 0.147
2027-07 0.124 0.163
2028-01 0.161 0.176

Ephemeris comparison

residual plot

Difference between NIMAv7 and JPL23 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