| 3122 Florence (1981 ET3) |
| Classification: Amor [NEO, PHA] SPK-ID: 2003122 |
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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 614 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .4230219917734523 | 5.9545e-09 | |
| a | 1.769011262929932 | 3.8677e-09 | au |
| q | 1.020680595015642 | 1.1033e-08 | au |
| i | 22.14392688370146 | 1.8514e-06 | deg |
| node | 336.062381882548 | 1.2356e-06 | deg |
| peri | 27.85093160508015 | 4.0105e-06 | deg |
| M | 134.2059881109666 | 1.5637e-06 | deg |
| tp | 2458880.121239341539
(2020-Jan-31.62123934) | 3.1191e-06 | TDB |
| period | 859.3979706902609
2.35 | 2.8184e-06
7.716e-09 | d
yr |
| n | .4188978939650639 | 1.3738e-09 | deg/d |
| Q | 2.517341930844223 | 5.5038e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
14.1 |
|
n/a |
MPO452206 |
|
| diameter |
diameter |
4.9 |
km |
n/a |
Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 |
based on assumed medium albedo (0.15) |
| rotation period |
rot_per |
2.3581 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (1998) Icarus 136, 124-153.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2002) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2003) http://www.asu.cas.cz/~ppravec/neo.htm]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Elenin, L.; Molotov, I. (2012) Minor Planet Bull. 39, 101-102.]
[Linder, T.; Sampson, R.; Holmes, R. (2013) Minor Planet Bull. 40, 4-6.]
[Warner, B.D. (2016) Minor Planet Bull. 43, 240-250.]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Observers at Arecibo and/or Goldstone (2017) https://cneos.jpl.nasa.gov/news/news199.html]
[Stone, G. (2017) Posting on CALL web site: http://www.minorplanet.info/call.html]
[Franco, L.; Bacci, P.; Maestripieri, M.; Baj, G.; et al. (2018) Minor Planet Bull. 45, 174-177.]
[Klinglesmith III, D.A.; Hendrickx, S. (2018) Minor Planet Bull. 45, 61-63.]
[Rodrigo, O.: Fornas, G.; Arce, E.; Mas, V.; et al. (2018) Minor Planet Bull. 45, 120-121.]
[Tomassini, A.; Scardella, M.; Franceschini, F.; Pierri, F. (2018) Minor Planet Bull. 45, 11-13.]
[Warner, B.D. (2018) Minor Planet Bull. 45, 19-34.]
[Abrams, N.S.; Bieryla, A.; Gomez, S.; Huang, J.; et al. (2020) Minor Planet Bull. 47, 3-4.]
[Ferrais, M.; Jehin, E.; Moulane, Y.; Pozuelos, Francisco J.; et al. (2020) Minor Planet Bull. 47, 21-22.]
[Núñez-López, R.; Loera-González, P.; Saucedo, J.C.; OlguÃÂn, L.; Contreras, M.E. (2020) Minor Planet Bull. 47, 89-90.] |
| geometric albedo |
albedo |
0.231 |
|
0.049 |
urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M) |
|
| SMASSII spectral type |
spec_B |
S |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) |
|
| 3122 Florence (1981 ET3) Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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