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201377 (2002 UN15)
Classification: Outer Main-belt Asteroid          SPK-ID: 2201377
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07476962463636296 4.032e-08  
a 3.244929276866665 3.3481e-08 au
q 3.0023071328638 1.3089e-07 au
i 20.61916626707752 4.8638e-06 deg
node 201.5828881218126 1.2909e-05 deg
peri 133.2909009761758 3.6075e-05 deg
M 61.77038214442176 3.2466e-05 deg
tp 2458634.160230408137
(2019-May-30.66023041)
0.00019328 TDB
period 2135.041300938112
5.85
3.3044e-05
9.047e-08
d
yr
n .1686150051719469 2.6096e-09 deg/d
Q 3.48755142086953 3.5984e-08 au
  Orbit Determination Parameters
   # obs. used (total)      524  
   data-arc span      8831 days (24.18 yr)  
   first obs. used      1996-09-12  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4969  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 23:43:57  

Additional Information
 Earth MOID = 2.02967 au 
 Jupiter MOID = 1.87284 au 
 T_jup = 3.078 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457491.5 (2016-Apr-13.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07785736313885236 4.1194e-08  
q 2.993205733258098 1.3399e-07 au
tp 2456481.326949378832
(2013-Jul-07.82694938)
0.00018788 TDB
node 201.6481595661712 1.2918e-05 deg
peri 130.7474526481018 3.4197e-05 deg
i 20.60486416184465 4.8629e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      524  
   data-arc span      8831 days (24.18 yr)  
   first obs. used      1996-09-12  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4969  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 23:43:57  

Additional Information
 Jupiter MOID = 1.87284 au 
 T_jup = 3.078 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.69698470704655E-15 -5.375804022037534E-15 -3.414101750687194E-13 -2.831646822205275E-15 -7.151120148132168E-14 -3.025959209960801E-16
q -5.375804022037534E-15 1.795308817633924E-14 -3.837272249075823E-13 1.011175622058283E-14 5.592193622924653E-14 2.184952127585497E-15
tp -3.414101750687194E-13 -3.837272249075823E-13 3.529962005444514E-8 -6.690460592307548E-12 5.955473757564605E-9 5.18249684815063E-12
node -2.831646822205275E-15 1.011175622058283E-14 -6.690460592307548E-12 1.668709940698145E-10 -1.574519525887707E-10 2.346569101203305E-12
peri -7.151120148132168E-14 5.592193622924653E-14 5.955473757564605E-9 -1.574519525887707E-10 1.169466270705044E-9 -1.310473389299955E-12
i -3.025959209960801E-16 2.184952127585497E-15 5.18249684815063E-12 2.346569101203305E-12 -1.310473389299955E-12 2.364782140626276E-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 14.7   n/a MPO454426  
diameter diameter 7.279 km 0.267 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 19.787 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.044   0.001 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

201377 (2002 UN15)          Discovered 2002-Oct-30 by NEAT at Palomar
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12

[ show close-approach data ]
Alternate Designations
 2002 UN15 = 2000 GF128 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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