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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03456395861503406 5.0325e-08  
a 5.142616233549603 1.0866e-07 au
q 4.964867058880192 3.2599e-07 au
i 33.39915156584759 4.8869e-06 deg
node 113.5736414935902 9.7271e-06 deg
peri 189.7604617689258 0.00010079 deg
M 290.2268879681305 0.00010471 deg
tp 2460026.081960188945
(2023-Mar-22.58196019)
0.0012488 TDB
period 4259.656721808066
11.66
0.000135
3.696e-07
d
yr
n .08451385252640578 2.6785e-09 deg/d
Q 5.320365408219014 1.1241e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1358  
   data-arc span      16284 days (44.58 yr)  
   first obs. used      1976-08-20  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46797  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:22:10  

Additional Information
 Earth MOID = 3.94864 au 
 Jupiter MOID = .0715348 au 
 T_jup = 2.671 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457455.5 (2016-Mar-08.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03262395124492454 5.0454e-08  
q 4.985251454799803 3.2821e-07 au
tp 2455753.821051517053
(2011-Jul-11.32105152)
0.0012729 TDB
node 113.5564295041128 9.7272e-06 deg
peri 189.2466652631229 0.00010636 deg
i 33.37961036221273 4.884e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1358  
   data-arc span      16284 days (44.58 yr)  
   first obs. used      1976-08-20  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46797  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:22:10  

Additional Information
 Jupiter MOID = .0715348 au 
 T_jup = 2.671 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.545620951719109E-15 -1.591123931651604E-14 -1.505116338783837E-11 4.240691787194072E-16 -1.321765967284573E-12 -1.011428609031032E-15
q -1.591123931651604E-14 1.077238545525157E-13 1.164209413911018E-10 -4.692192917443076E-15 1.044207539115892E-11 2.011849442778288E-14
tp -1.505116338783837E-11 1.164209413911018E-10 1.620313684134766E-6 -1.645104512422415E-10 1.348206292692022E-7 1.961486784646538E-10
node 4.240691787194072E-16 -4.692192917443076E-15 -1.645104512422415E-10 9.461849020184072E-11 -9.246723446847671E-11 -2.368352355573107E-12
peri -1.321765967284573E-12 1.044207539115892E-11 1.348206292692022E-7 -9.246723446847671E-11 1.131228624254274E-8 1.868356466969663E-11
i -1.011428609031032E-15 2.011849442778288E-14 1.961486784646538E-10 -2.368352355573107E-12 1.868356466969663E-11 2.385319210254743E-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 11.23   n/a MPCxxxxx  
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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