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120791 (1998 FP28)
Classification: Main-belt Asteroid          SPK-ID: 2120791
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2062809902998151 4.728e-08  
a 2.60861318111195 1.3223e-08 au
q 2.070505870803026 1.2212e-07 au
i 3.972782508634188 7.0018e-06 deg
node 169.2069318084699 6.5226e-05 deg
peri 327.7896458073862 6.7562e-05 deg
M 169.3761690007847 1.6747e-05 deg
tp 2458476.459668823217
(2018-Dec-23.95966882)
7.0057e-05 TDB
period 1538.909049374203
4.21
1.1701e-05
3.204e-08
d
yr
n .2339319533837259 1.7787e-09 deg/d
Q 3.146720491420874 1.595e-08 au
  Orbit Determination Parameters
   # obs. used (total)      663  
   data-arc span      7746 days (21.21 yr)  
   first obs. used      1998-03-20  
   last obs. used      2019-06-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52418  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:09  

Additional Information
 Earth MOID = 1.08526 au 
 Jupiter MOID = 1.89542 au 
 T_jup = 3.377 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457109.5 (2015-Mar-28.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .207096940252006 4.6524e-08  
q 2.065270841057635 1.1981e-07 au
tp 2456938.119925092117
(2014-Oct-07.61992509)
6.6769e-05 TDB
node 169.4243402423061 6.5456e-05 deg
peri 326.9296124337253 6.776e-05 deg
i 3.966308692097583 6.9977e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      663  
   data-arc span      7746 days (21.21 yr)  
   first obs. used      1998-03-20  
   last obs. used      2019-06-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52418  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:09  

Additional Information
 Jupiter MOID = 1.89542 au 
 T_jup = 3.377 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.164439939305776E-15 -5.554385409704679E-15 1.730923321935427E-12 -1.329535272735428E-14 4.263269053236619E-13 -3.698419817159379E-15
q -5.554385409704679E-15 1.435503128644666E-14 -4.396744389398239E-12 3.508585144327522E-14 -1.082273844338352E-12 9.791438821965909E-15
tp 1.730923321935427E-12 -4.396744389398239E-12 4.458077819971675E-9 -1.543082323688227E-11 1.188418847755535E-9 -5.397549138003059E-12
node -1.329535272735428E-14 3.508585144327522E-14 -1.543082323688227E-11 4.284531423232797E-9 -4.276828825650667E-9 2.010327667367673E-10
peri 4.263269053236619E-13 -1.082273844338352E-12 1.188418847755535E-9 -4.276828825650667E-9 4.591460340264921E-9 -2.018650074513966E-10
i -3.698419817159379E-15 9.791438821965909E-15 -5.397549138003059E-12 2.010327667367673E-10 -2.018650074513966E-10 4.896755728256413E-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 15.80   n/a MPCxxxxx  
diameter diameter 1.848 km 0.297 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.326   0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120791 (1998 FP28)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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Alternate Designations
 1998 FP28 = 2000 SN329 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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