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18038 (1999 NR48)
Classification: Main-belt Asteroid          SPK-ID: 2018038
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04260963312369924 3.5705e-08  
a 3.161534125724478 1.9283e-08 au
q 3.026822316519303 1.1657e-07 au
i 8.677542932231681 4.0971e-06 deg
node 235.9801455812742 2.5593e-05 deg
peri 99.59313549903044 5.4417e-05 deg
M 255.6752051481594 4.8737e-05 deg
tp 2459795.518236439651
(2022-Aug-04.01823644)
0.00027969 TDB
period 2053.266104404854
5.62
1.8785e-05
5.143e-08
d
yr
n .1753304158811637 1.604e-09 deg/d
Q 3.296245934929653 2.0104e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1776  
   data-arc span      15183 days (41.57 yr)  
   first obs. used      1978-11-29  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5083  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:20:55  

Additional Information
 Earth MOID = 2.03202 au 
 Jupiter MOID = 1.88285 au 
 T_jup = 3.186 
[ 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 13.24   n/a E2021B10  
diameter diameter 6.331 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 39.4503 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.]
geometric albedo albedo 0.278   0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18038 (1999 NR48)          Discovered 1999-Jul-13 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 NR48 = 1978 WT3 = 1998 KM13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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