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49418 (1998 XP73)
Classification: Main-belt Asteroid          SPK-ID: 2049418
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1459439077546665 4.5441e-08  
a 2.577173882584396 1.1968e-08 au
q 2.201051055196764 1.2021e-07 au
i 7.875349273419163 5.5564e-06 deg
node 22.53242936057225 2.5539e-05 deg
peri 121.6900678098688 3.3411e-05 deg
M 26.78493001858707 1.8188e-05 deg
tp 2458888.064870516700
(2020-Feb-08.56487052)
7.6446e-05 TDB
period 1511.172386334395
4.14
1.0527e-05
2.882e-08
d
yr
n .2382256341205659 1.6595e-09 deg/d
Q 2.953296709972029 1.3715e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1589  
   data-arc span      21678 days (59.35 yr)  
   first obs. used      1960-09-29  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53303  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:26:13  

Additional Information
 Earth MOID = 1.22438 au 
 Jupiter MOID = 2.07302 au 
 T_jup = 3.398 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456685.5 (2014-Jan-28.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1461449927089219 4.5737e-08  
q 2.200755633384033 1.2113e-07 au
tp 2457378.328119980343
(2015-Dec-21.82811998)
7.7881e-05 TDB
node 22.55907695975231 2.5551e-05 deg
peri 122.0243691905846 3.3301e-05 deg
i 7.873987478215749 5.5547e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1589  
   data-arc span      21678 days (59.35 yr)  
   first obs. used      1960-09-29  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53303  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:26:13  

Additional Information
 Jupiter MOID = 2.07302 au 
 T_jup = 3.398 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.091835119396487E-15 -5.521560625280594E-15 2.209432409341435E-12 -2.141047992272625E-14 6.310165320901208E-13 -5.688645291197606E-15
q -5.521560625280594E-15 1.467170864787447E-14 -5.917462216187669E-12 5.695281752641063E-14 -1.701960677864567E-12 1.492831647418031E-14
tp 2.209432409341435E-12 -5.917462216187669E-12 6.065521358091541E-9 -3.59394488089023E-11 1.66756034467936E-9 -8.555940633854876E-12
node -2.141047992272625E-14 5.695281752641063E-14 -3.59394488089023E-11 6.528411516494038E-10 -6.559121892727369E-10 -2.262736509057219E-11
peri 6.310165320901208E-13 -1.701960677864567E-12 1.66756034467936E-9 -6.559121892727369E-10 1.108952029466985E-9 2.020229715390381E-11
i -5.688645291197606E-15 1.492831647418031E-14 -8.555940633854876E-12 -2.262736509057219E-11 2.020229715390381E-11 3.085519211459077E-11

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 14.2   n/a MPO502485  
diameter diameter 4.096 km 0.447 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.620 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.264   0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

49418 (1998 XP73)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 XP73 = 2000 JE16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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