(470599) 2008OG19


Object

Object (470599) 2008OG19
Diameter(1) 509 km
Dynamic class(1) SDO
Absolute magnitude 4.70
G slop 0.15
(1) Data from the johnston archive list.

Orbital elements

Epoch (Julian date) 2458200.5
Semi major axis 66.979868 ± 0.004577 au
Eccentricity 0.424106308 ± 0.000035407
Inclination 13.154843634 ± 0.000310934 °
Longitude of ascending node 164.056449 ± 0.000945 °
Argument of perihelia 140.440716 ± 0.002503 °
Mean anomaly 2.997612 ± 0.001188 °
Orbital period 548.18 yr

Ephemeris & Observations

Ephemeris version NIMAv7
Observation file (documentation) omc_ast_NIMAv7.txt
bsp file 470599_2008OG19_nima_v7.bsp
Date of first observation 2008-07-30
Date of last observation 2020-06-23
Number of observations used in the fit 161
Number of rejected observations 11
Number of DES observations 0
Number of MPC observations 103
Number of unpublished observations 69
RMS of observations 0.200 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)
2020-01 0.116 0.100
2020-07 0.139 0.110
2021-01 0.144 0.114
2021-07 0.177 0.125
2022-01 0.179 0.128
2022-07 0.224 0.140
2023-01 0.222 0.142
2023-07 0.277 0.154
2024-01 0.271 0.155

Ephemeris comparison

residual plot

Difference between NIMAv7 and JPL7 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