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JPL Small-Body Database Browser
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49953 (1999 XL215)
Classification: Main-belt Asteroid          SPK-ID: 2049953
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2081611076265774 3.026e-08  
a 2.260056315502401 5.974e-09 au
q 1.78960048956898 6.9062e-08 au
i 6.156156687832375 3.6801e-06 deg
node 171.5833536681997 3.0907e-05 deg
peri 128.0876592611232 3.2206e-05 deg
M 44.20413111041913 8.2579e-06 deg
tp 2458448.116594222487
(2018-Nov-25.61659422)
2.8346e-05 TDB
period 1241.015821414353
3.40
4.9205e-06
1.347e-08
d
yr
n .2900849399242287 1.1502e-09 deg/d
Q 2.730512141435822 7.2175e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1824  
   data-arc span      9377 days (25.67 yr)  
   first obs. used      1994-04-05  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47283  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:25:14  

Additional Information
 Earth MOID = .781479 au 
 Jupiter MOID = 2.5158 au 
 T_jup = 3.584 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4   n/a MPO347865  
diameter diameter 2.928 km 0.367 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 2.99645 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2015) http://www.asu.cas.cz/~ppravec/neo.htm]
[Oey, J.; Williams, H.; Groom, R.; Pray, D.; Benishek, V. (2017) Minor Planet Bull. 44, 193-199.]
geometric albedo albedo 0.199   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49953 (1999 XL215)          Discovered 1999-Dec-14 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XL215 = 1998 KA9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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