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30621 (4189 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2030621
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1849195432689939 3.1015e-08  
a 2.572938989597193 1.0491e-08 au
q 2.097152286781894 7.931e-08 au
i 4.125892232401058 3.7736e-06 deg
node 281.5123099060205 6.9557e-05 deg
peri 184.5003469504235 7.1297e-05 deg
M 131.1367622262967 1.6586e-05 deg
tp 2458651.383346503153
(2019-Jun-16.88334650)
6.7723e-05 TDB
period 1507.449108113055
4.13
9.2194e-06
2.524e-08
d
yr
n .2388140323029737 1.4606e-09 deg/d
Q 3.048725692412493 1.243e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1065  
   data-arc span      21823 days (59.75 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51057  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:38:37  

Additional Information
 Earth MOID = 1.11387 au 
 Jupiter MOID = 2.09266 au 
 T_jup = 3.401 
[ show covariance matrix ]

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 15.33   n/a E2021B10  

30621 (4189 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20011002/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 4189 P-L = 1981 UN8 = 1999 AP34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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