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JPL Small-Body Database Browser
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49675 (1999 SW27)
Classification: Inner Main-belt Asteroid          SPK-ID: 2049675
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08962184864445744 5.5494e-08  
a 1.95169054683477 7.569e-09 au
q 1.776776432045526 1.0713e-07 au
i 18.04229645590069 5.1884e-06 deg
node 268.0425091831454 1.5128e-05 deg
peri 221.6278805758083 2.9168e-05 deg
M 79.4186452399524 2.497e-05 deg
tp 2458780.797581151546
(2019-Oct-24.29758115)
6.8896e-05 TDB
period 995.8980104291027
2.73
5.7934e-06
1.586e-08
d
yr
n .3614827986702039 2.1028e-09 deg/d
Q 2.126604661624015 8.2473e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1152  
   data-arc span      12090 days (33.10 yr)  
   first obs. used      1986-12-01  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45367  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 07:45:44  

Additional Information
 Earth MOID = .815912 au 
 Jupiter MOID = 3.04241 au 
 T_jup = 3.826 
[ 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 14.7   n/a MPO452846  
diameter diameter 1.896 km 0.257 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.994 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Warner, B.D (2011) Minor Planet Bull. 38, 25-31.]
[Warner, B.D. (2014) Minor Planet Bull. 41, 102-112.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Stephens, R.D. (2017) Minor Planet Bull. 257-258.]
geometric albedo albedo 1.000   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49675 (1999 SW27)          Discovered 1999-Sep-18 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 SW27 = 1986 XZ1 = 2001 ML5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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