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JPL Small-Body Database Browser
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29603 (1998 MO44)
Classification: Jupiter Trojan          SPK-ID: 2029603
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03441551031466929 5.4974e-08  
a 5.143942475967815 1.1714e-07 au
q 4.966911070628079 3.3539e-07 au
i 33.3989138572927 5.9547e-06 deg
node 113.5747713763479 9.7928e-06 deg
peri 189.2746809240325 0.00010942 deg
M 273.7900801378426 0.00011466 deg
tp 2460020.963140400101
(2023-Mar-17.46314040)
0.0013735 TDB
period 4261.304628648601
11.67
0.00014556
3.985e-07
d
yr
n .08448116982290652 2.8857e-09 deg/d
Q 5.32097388130755 1.2117e-07 au
  Orbit Determination Parameters
   # obs. used (total)      996  
   data-arc span      15873 days (43.46 yr)  
   first obs. used      1976-08-20  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5068  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:44:15  

Additional Information
 Earth MOID = 3.95248 au 
 Jupiter MOID = .0721627 au 
 T_jup = 2.671 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457102.5 (2015-Mar-21.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03256776389870356 5.4883e-08  
q 4.987559335407403 3.3563e-07 au
tp 2455763.229343804438
(2011-Jul-20.72934380)
0.0013867 TDB
node 113.5621952604675 9.794e-06 deg
peri 190.0810966600913 0.0001155 deg
i 33.3756745162452 5.9506e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      996  
   data-arc span      15873 days (43.46 yr)  
   first obs. used      1976-08-20  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5068  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:44:15  

Additional Information
 Jupiter MOID = .0721627 au 
 T_jup = 2.671 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.012146693281534E-15 -1.740850053065326E-14 -4.299596766223186E-12 -1.226880778208893E-15 -4.457252649563093E-13 4.537118437143179E-15
q -1.740850053065326E-14 1.126500806888336E-13 8.459232611753146E-11 -1.695576977446165E-15 7.85443184373538E-12 -8.818110902903167E-15
tp -4.299596766223186E-12 8.459232611753146E-11 1.923027693380979E-6 -2.374831102778736E-10 1.595900869288E-7 1.222317472001895E-10
node -1.226880778208893E-15 -1.695576977446165E-15 -2.374831102778736E-10 9.592211482291117E-11 -9.95737261840362E-11 -1.005664345726248E-12
peri -4.457252649563093E-13 7.85443184373538E-12 1.595900869288E-7 -9.95737261840362E-11 1.333992218553508E-8 1.120677686422104E-11
i 4.537118437143179E-15 -8.818110902903167E-15 1.222317472001895E-10 -1.005664345726248E-12 1.120677686422104E-11 3.540990141723119E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.1   n/a MPO435968  
diameter diameter 32.512 km 0.575 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.061   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

29603 (1998 MO44)          Discovered 1998-Jun-19 by LINEAR at Socorro
Reference: 20011002/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 MO44 = 1982 BU4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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