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30948 (1994 PU)
Classification: Main-belt Asteroid          SPK-ID: 2030948
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1325710863920104 3.3962e-08  
a 2.202319765394287 6.3304e-09 au
q 1.910355841513369 7.7964e-08 au
i 3.563766486025555 3.9052e-06 deg
node 330.6869905557406 4.3671e-05 deg
peri 67.16636044464586 4.6021e-05 deg
M 32.98221679782608 1.5331e-05 deg
tp 2459287.130473240846
(2021-Mar-13.63047324)
5.0639e-05 TDB
period 1193.765412271825
3.27
5.1471e-06
1.409e-08
d
yr
n .3015667871587042 1.3002e-09 deg/d
Q 2.494283689275206 7.1696e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1806  
   data-arc span      23847 days (65.29 yr)  
   first obs. used      1955-10-25  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52032  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 19:50:27  

Additional Information
 Earth MOID = .920156 au 
 Jupiter MOID = 2.89834 au 
 T_jup = 3.650 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457569.5 (2016-Jun-30.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1335950425933991 3.3956e-08  
q 1.907870355068834 7.8025e-08 au
tp 2458093.299229813583
(2017-Dec-05.79922981)
4.81e-05 TDB
node 330.7508950429225 4.3712e-05 deg
peri 67.13971842709738 4.6013e-05 deg
i 3.562522824109937 3.9038e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1806  
   data-arc span      23847 days (65.29 yr)  
   first obs. used      1955-10-25  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52032  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 19:50:27  

Additional Information
 Jupiter MOID = 2.89834 au 
 T_jup = 3.650 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.152983140800223E-15 -2.644805257005103E-15 -7.595592110142419E-13 -3.375474063019409E-15 -1.933137040396676E-13 -9.669762017486235E-16
q -2.644805257005103E-15 6.087877593862614E-15 1.76060784774993E-12 7.361899519606584E-15 4.466232708563741E-13 2.288571966808995E-15
tp -7.595592110142419E-13 1.76060784774993E-12 2.313621473973613E-9 9.01895168664936E-13 6.93447818107248E-10 7.340149887778047E-13
node -3.375474063019409E-15 7.361899519606584E-15 9.01895168664936E-13 1.910735022249351E-9 -1.906383639574146E-9 2.816023764906204E-11
peri -1.933137040396676E-13 4.466232708563741E-13 6.93447818107248E-10 -1.906383639574146E-9 2.117154694887786E-9 -2.792658946814089E-11
i -9.669762017486235E-16 2.288571966808995E-15 7.340149887778047E-13 2.816023764906204E-11 -2.792658946814089E-11 1.523942202383699E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.18   n/a E2021B10  
rotation period rot_per 46.894 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]

30948 (1994 PU)          Discovered 1994-Aug-14 by Kobayashi, T. at Oizumi
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 PU = 1955 UE1 = 1992 BE6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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