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30845 (1991 PQ3)
Classification: Main-belt Asteroid          SPK-ID: 2030845
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05938846867411685 3.4694e-08  
a 2.793167114049558 1.2011e-08 au
q 2.627285196395252 9.51e-08 au
i 3.342198409179864 4.1836e-06 deg
node 355.1571968226456 6.1965e-05 deg
peri 273.3182534335619 7.2266e-05 deg
M 143.3731557555085 3.8288e-05 deg
tp 2458521.438433750015
(2019-Feb-06.93843375)
0.00018074 TDB
period 1705.076257558781
4.67
1.0998e-05
3.011e-08
d
yr
n .2111342518576998 1.3618e-09 deg/d
Q 2.959049031703863 1.2724e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1671  
   data-arc span      10805 days (29.58 yr)  
   first obs. used      1991-08-02  
   last obs. used      2021-03-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51599  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:41:05  

Additional Information
 Earth MOID = 1.61222 au 
 Jupiter MOID = 2.09333 au 
 T_jup = 3.323 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.21   n/a E2021B10  
diameter diameter 3.845 km 0.883 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.329   0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30845 (1991 PQ3)          Discovered 1991-Aug-02 by Elst, E. W. at La Silla
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 PQ3 = 1999 FF44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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