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1509 Esclangona (1938 YG)
Classification: Inner Main-belt Asteroid          SPK-ID: 2001509
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 65 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03232705476757542 4.2187e-08  
a 1.86625737642138 4.1001e-09 au
q 1.805926772003414 7.8447e-08 au
i 22.32496707593214 4.5093e-06 deg
node 283.5145878038018 1.1245e-05 deg
peri 267.5637436394752 8.2926e-05 deg
M 251.9340359476929 8.5018e-05 deg
tp 2459280.038843565244
(2021-Mar-06.53884357)		 0.00022017 TDB
period 931.2273717817195
2.55		 3.0688e-06
8.402e-09		 d
yr
n .3865865747816359 1.274e-09 deg/d
Q 1.926587980839345 4.2327e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2117  
   data-arc span      29903 days (81.87 yr)  
   first obs. used      1938-12-21  
   last obs. used      2020-11-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35308  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:01:04  

Additional Information
 Earth MOID = .844949 au 
 Jupiter MOID = 3.2336 au 
 T_jup = 3.896 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6   n/a MPO502168 IRAS observations used: 2
diameter diameter 8.17 km 0.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
rotation period rot_per 3.25283 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2005) Minor Planet Bull. 32, 54-58.]
[Polishook, D.; Brosch, N.; Prialnik, D.; Kaspi, S. (2009) Meteoritics and Planetary Sci. 44, 1955-1966.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2009) http://www.asu.cas.cz/~ppravec/neo.htm]
[Warner, B.D.; Pravec, P.; Kusnirak, P.; Hornoch, K.; Harris, A.W.; et al. (2010) Minor Planet Bull. 37, 70-73.]
[Polishook, D.; Brosch, N.; Prialnik, D. (2011) Icarus 212, 167-174.]
[Marchis, F.; Enriquez, J.E.; Emery, J.P.; Mueller, M.; et al. (2012) Icarus 221, 1130-1161.]
[Warner, B.D. (2013) Minor Planet Bull. 40, 137-145.]
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.2327   0.038 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
B-V BV 0.894   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=19.76, mean=19.82, max.=19.87) deg.
U-B UB 0.472   0.052 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=19.76, mean=19.82, max.=19.87) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

1509 Esclangona (1938 YG)          Discovered 1938-Dec-21 by Patry, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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