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91154 (1998 QM50)
Classification: Main-belt Asteroid          SPK-ID: 2091154
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1913421438215088 4.3997e-08  
a 3.165925584903058 2.5013e-08 au
q 2.560150596308343 1.4552e-07 au
i 8.064640011825725 4.6837e-06 deg
node 135.7826900794101 3.3038e-05 deg
peri 193.5811121159566 3.4858e-05 deg
M 30.70843404647869 1.3015e-05 deg
tp 2459220.988874828093
(2021-Jan-06.48887483)
7.3392e-05 TDB
period 2057.545655576392
5.63
2.4384e-05
6.676e-08
d
yr
n .1749657408691381 2.0736e-09 deg/d
Q 3.771700573497773 2.98e-08 au
  Orbit Determination Parameters
   # obs. used (total)      630  
   data-arc span      11076 days (30.32 yr)  
   first obs. used      1991-04-09  
   last obs. used      2021-08-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61436  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:01:40  

Additional Information
 Earth MOID = 1.54899 au 
 Jupiter MOID = 1.59029 au 
 T_jup = 3.160 
[ 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 14.70   n/a E2020-QM9  
diameter diameter 8.914 km 3.242 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.032   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

91154 (1998 QM50)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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