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55388 (2001 SN276)
Classification: Main-belt Asteroid          SPK-ID: 2055388
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1726287867723536 3.3807e-08  
a 2.239118979428665 8.3887e-09 au
q 1.852582586570944 7.3664e-08 au
i 7.726480179313416 3.4452e-06 deg
node 101.1985883175173 2.9451e-05 deg
peri 239.9751198975503 3.1417e-05 deg
M 260.3139746615453 1.1596e-05 deg
tp 2459539.380019255264
(2021-Nov-20.88001926)
4.011e-05 TDB
period 1223.810524270483
3.35
6.8774e-06
1.883e-08
d
yr
n .2941631836469105 1.6531e-09 deg/d
Q 2.625655372286387 9.8368e-09 au
  Orbit Determination Parameters
   # obs. used (total)      855  
   data-arc span      8913 days (24.40 yr)  
   first obs. used      1995-12-24  
   last obs. used      2020-05-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57484  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 11:09:08  

Additional Information
 Earth MOID = .855677 au 
 Jupiter MOID = 2.7668 au 
 T_jup = 3.604 
[ 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 15.94   n/a E2021B10  
rotation period rot_per 22.9437 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

55388 (2001 SN276)          Discovered 2001-Sep-21 by NEAT at Palomar
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2001 SN276 = 1998 WN45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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