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21205 (1994 PV27)
Classification: Main-belt Asteroid          SPK-ID: 2021205
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1570755004139086 3.8527e-08  
a 2.613717472600678 1.035e-08 au
q 2.20316649265135 1.0091e-07 au
i 6.665469056874043 3.559e-06 deg
node 131.4731225198472 3.4733e-05 deg
peri 45.92197221466045 3.6243e-05 deg
M 275.4608887185133 1.2219e-05 deg
tp 2459758.944543342617
(2022-Jun-28.44454334)
5.3532e-05 TDB
period 1543.428049165168
4.23
9.1679e-06
2.51e-08
d
yr
n .2332470245015452 1.3855e-09 deg/d
Q 3.024268452550007 1.1976e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1537  
   data-arc span      9681 days (26.51 yr)  
   first obs. used      1994-08-12  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49867  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:41:28  

Additional Information
 Earth MOID = 1.21475 au 
 Jupiter MOID = 1.95106 au 
 T_jup = 3.381 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457503.5 (2016-Apr-25.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .155957410439256 3.8704e-08  
q 2.207105737613019 1.013e-07 au
tp 2458216.772347948372
(2018-Apr-08.27234795)
4.9354e-05 TDB
node 131.5324662907999 3.4769e-05 deg
peri 46.16145362534334 3.6292e-05 deg
i 6.660861673727159 3.5568e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1537  
   data-arc span      9681 days (26.51 yr)  
   first obs. used      1994-08-12  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49867  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:41:28  

Additional Information
 Jupiter MOID = 1.95106 au 
 T_jup = 3.381 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.49799285947033E-15 -3.906063228258449E-15 2.08608261086552E-13 2.022729737111075E-15 4.322052216395378E-14 4.909671557782664E-16
q -3.906063228258449E-15 1.026241910423656E-14 -3.729236904083307E-13 -4.760642462962109E-15 -8.616659520028401E-14 -1.14074179769888E-15
tp 2.08608261086552E-13 -3.729236904083307E-13 2.43579796577365E-9 -6.08231443876901E-12 5.327692354660734E-10 4.803078460230081E-13
node 2.022729737111075E-15 -4.760642462962109E-15 -6.08231443876901E-12 1.208901839021109E-9 -1.201812070968008E-9 3.224137720015468E-11
peri 4.322052216395378E-14 -8.616659520028401E-14 5.327692354660734E-10 -1.201812070968008E-9 1.317144016070499E-9 -3.195396857010356E-11
i 4.909671557782664E-16 -1.14074179769888E-15 4.803078460230081E-13 3.224137720015468E-11 -3.195396857010356E-11 1.265102780494884E-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 14.39   n/a E2021B10  
diameter diameter 4.297 km 0.176 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.182   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21205 (1994 PV27)          Discovered 1994-Aug-12 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 PV27 = 1999 VS197 = 2000 YO18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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