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120670 (1996 XM21)
Classification: Main-belt Asteroid          SPK-ID: 2120670
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1394349562768319 7.711e-08  
a 2.575182592421499 1.5675e-08 au
q 2.216112120242349 1.9064e-07 au
i 6.375301226646809 7.1382e-06 deg
node 3.684051657104474 4.0373e-05 deg
peri 178.0425105389337 4.4875e-05 deg
M 183.7324823421457 2.443e-05 deg
tp 2459939.560951007964
(2022-Dec-26.06095101)
0.00010738 TDB
period 1509.421281346397
4.13
1.3781e-05
3.773e-08
d
yr
n .2385020036810939 2.1776e-09 deg/d
Q 2.93425306460065 1.786e-08 au
  Orbit Determination Parameters
   # obs. used (total)      519  
   data-arc span      8784 days (24.05 yr)  
   first obs. used      1996-12-08  
   last obs. used      2020-12-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62167  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:07:37  

Additional Information
 Earth MOID = 1.21834 au 
 Jupiter MOID = 2.02437 au 
 T_jup = 3.405 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457321.5 (2015-Oct-26.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1379350402235006 7.7316e-08  
q 2.221194641325987 1.9093e-07 au
tp 2456918.173400452509
(2014-Sep-17.67340045)
8.9642e-05 TDB
node 3.800662527783366 4.0375e-05 deg
peri 177.8785142124955 4.4973e-05 deg
i 6.373998400744041 7.1358e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      519  
   data-arc span      8784 days (24.05 yr)  
   first obs. used      1996-12-08  
   last obs. used      2020-12-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62167  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:07:37  

Additional Information
 Jupiter MOID = 2.02437 au 
 T_jup = 3.405 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.977769514771399E-15 -1.47388442088699E-14 2.519535672543238E-12 -5.144690268647774E-15 5.229360898343E-13 -1.107919889243043E-14
q -1.47388442088699E-14 3.645397455659233E-14 -5.766121532963118E-12 1.470732867085449E-14 -1.190922208440746E-12 2.71409351256724E-14
tp 2.519535672543238E-12 -5.766121532963118E-12 8.03564104538152E-9 1.2860440132839E-11 1.790904554843289E-9 -7.996222738431689E-12
node -5.144690268647774E-15 1.470732867085449E-14 1.2860440132839E-11 1.630115181982115E-9 -1.616107545309461E-9 -9.736239349581956E-12
peri 5.229360898343E-13 -1.190922208440746E-12 1.790904554843289E-9 -1.616107545309461E-9 2.022541210427558E-9 7.898763503676766E-12
i -1.107919889243043E-14 2.71409351256724E-14 -7.996222738431689E-12 -9.736239349581956E-12 7.898763503676766E-12 5.091899644194062E-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 15.6   n/a MPO270617  
diameter diameter 1.920 km 0.450 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.302   0.222 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120670 (1996 XM21)          Discovered 1996-Dec-08 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1996 XM21 = 1998 FZ60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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