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5028 Halaesus (1988 BY1)
Classification: Jupiter Trojan          SPK-ID: 2005028
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1310940038712795 6.0418e-08  
a 5.261344955346879 1.0479e-07 au
q 4.571614179402498 3.6767e-07 au
i 21.47654470475281 6.5839e-06 deg
node 44.01995827667646 1.4365e-05 deg
peri 11.47503741633632 2.8838e-05 deg
M 297.8323827873637 2.9449e-05 deg
tp 2459761.711451767869
(2022-Jul-01.21145177)
0.00037242 TDB
period 4408.020363706841
12.07
0.0001317
3.606e-07
d
yr
n .08166931418104086 2.44e-09 deg/d
Q 5.95107573129126 1.1853e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1532  
   data-arc span      11881 days (32.53 yr)  
   first obs. used      1988-01-23  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49392  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:23:00  

Additional Information
 Earth MOID = 3.58526 au 
 Jupiter MOID = .389822 au 
 T_jup = 2.844 
[ 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 10.3   n/a MPO502201  
diameter diameter 50.770 km 0.384 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 24.937 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
[Szabo, Gy.M.; Pal, A.; Kiss, Cs.; Kiss, L.L.; et al. (2017) Astron. Astrophys. 599, A44.]
geometric albedo albedo 0.057   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

5028 Halaesus (1988 BY1)          Discovered 1988-Jan-23 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1988 BY1 = 1985 US2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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