(174567) Varda
This object has a more recent orbit available here
Object
| Object | (174567) Varda |
| Diameter(1) | 705 km |
| Dynamic class(1) | cubewano |
| Absolute magnitude | 3.40 |
| G slop | 0.15 |
(1) Data from the johnston archive list.
Orbital elements
| Epoch (Julian date) | 2458200.5 |
| Semi major axis | 46.046038 ± 0.001195 au |
| Eccentricity | 0.140252022 ± 0.000011921 |
| Inclination | 21.497792071 ± 0.000267112 ° |
| Longitude of ascending node | 183.978338 ± 0.000723 ° |
| Argument of perihelia | 180.716120 ± 0.006867 ° |
| Mean anomaly | 271.849450 ± 0.006577 ° |
| Orbital period | 312.46 yr |
Ephemeris & Observations
| Ephemeris version | NIMAv7 |
| Observation file |
omc_ast_NIMAv7.txt |
| bsp file | 174567_Varda_nima_v7.bsp |
| Date of first observation | 1980-03-19 |
| Date of last observation | 2018-09-10 |
| Number of observations used in the fit | 350 |
| Number of rejected observations | 13 |
| Number of DES observations | 0 |
| Number of MPC observations | 0 |
| Number of unpublished observations | 104 |
| RMS of observations | 0.195 arcsec |
Residuals
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) |
| 2018-01 | 0.045 | 0.020 |
| 2018-07 | 0.026 | 0.015 |
| 2019-01 | 0.059 | 0.020 |
| 2019-07 | 0.042 | 0.017 |
| 2020-01 | 0.075 | 0.021 |
| 2020-07 | 0.059 | 0.020 |
| 2021-01 | 0.093 | 0.023 |
| 2021-07 | 0.080 | 0.024 |
| 2022-01 | 0.114 | 0.025 |
Ephemeris comparison
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.