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359298 (2009 HL78)
Classification: Main-belt Asteroid          SPK-ID: 2359298
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08991430178316151 6.7727e-08  
a 2.704891426434095 3.2303e-08 au
q 2.461683002427013 1.7148e-07 au
i 5.168902215377344 7.2554e-06 deg
node 169.12399572 7.0258e-05 deg
peri 99.38373715611833 8.2422e-05 deg
M 168.306930812427 4.5984e-05 deg
tp 2458440.834011908387
(2018-Nov-18.33401191)
0.00020428 TDB
period 1624.8870702643
4.45
2.9108e-05
7.969e-08
d
yr
n .2215538584730342 3.9688e-09 deg/d
Q 2.948099850441176 3.5207e-08 au
  Orbit Determination Parameters
   # obs. used (total)      132  
   data-arc span      7549 days (20.67 yr)  
   first obs. used      2000-05-04  
   last obs. used      2021-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6184  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 16:19:30  

Additional Information
 Earth MOID = 1.4506 au 
 Jupiter MOID = 2.12566 au 
 T_jup = 3.354 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457309.5 (2015-Oct-14.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09068867665787445 6.723e-08  
q 2.459315857188459 1.7015e-07 au
tp 2456819.896399498753
(2014-Jun-11.39639950)
0.00019983 TDB
node 169.18456956504 7.0193e-05 deg
peri 100.0874875629733 8.2321e-05 deg
i 5.171350151162885 7.2612e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      132  
   data-arc span      7549 days (20.67 yr)  
   first obs. used      2000-05-04  
   last obs. used      2021-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6184  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 16:19:30  

Additional Information
 Jupiter MOID = 2.12566 au 
 T_jup = 3.354 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.519877097984445E-15 -1.130427602759253E-14 -6.428477428845904E-13 -2.351797566515029E-14 -2.751435454550128E-13 1.604476260329845E-15
q -1.130427602759253E-14 2.895069084636511E-14 2.042829195753009E-12 5.540358446138011E-14 8.232732951921963E-13 -3.299410050259047E-15
tp -6.428477428845904E-13 2.042829195753009E-12 3.993249472145488E-8 3.558708143580421E-12 8.625843238219692E-9 -1.203232449230198E-11
node -2.351797566515029E-14 5.540358446138011E-14 3.558708143580421E-12 4.927103271103843E-9 -4.904999647360005E-9 1.611928700407948E-10
peri -2.751435454550128E-13 8.232732951921963E-13 8.625843238219692E-9 -4.904999647360005E-9 6.776714481067872E-9 -1.631420763664233E-10
i 1.604476260329845E-15 -3.299410050259047E-15 -1.203232449230198E-11 1.611928700407948E-10 -1.631420763664233E-10 5.272567210540303E-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 16.8   n/a MPO450333  

359298 (2009 HL78)          Discovered 2009-Apr-24 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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