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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1325710863747425 3.3961e-08  
a 2.202319765410016 6.3303e-09 au
q 1.910355841565042 7.7962e-08 au
i 3.563766529026652 3.9051e-06 deg
node 330.6869898885122 4.3669e-05 deg
peri 67.16636108397249 4.602e-05 deg
M 32.98221681618476 1.5331e-05 deg
tp 2459287.130473178796
(2021-Mar-13.63047318)
5.0638e-05 TDB
period 1193.765412284613
3.27
5.147e-06
1.409e-08
d
yr
n .3015667871554735 1.3002e-09 deg/d
Q 2.49428368925499 7.1695e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1807  
   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      .52111  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 16:01:44  

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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1335950425685437 3.3955e-08  
q 1.907870355126975 7.8023e-08 au
tp 2458093.299229769211
(2017-Dec-05.79922977)
4.8099e-05 TDB
node 330.7508943748429 4.371e-05 deg
peri 67.13971907572633 4.6011e-05 deg
i 3.5625228670688 3.9037e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1807  
   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      .52111  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 16:01:44  

Additional Information
 Jupiter MOID = 2.89834 au 
 T_jup = 3.650 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.152935270029638E-15 -2.644692559376108E-15 -7.59631266783801E-13 -3.375665240042288E-15 -1.933424306922044E-13 -9.669229965042607E-16
q -2.644692559376108E-15 6.087612280445527E-15 1.76077748166519E-12 7.362422317460799E-15 4.466908266781645E-13 2.288442036610273E-15
tp -7.59631266783801E-13 1.76077748166519E-12 2.31351301558305E-9 9.017267620330242E-13 6.934044596766258E-10 7.340873765507417E-13
node -3.375665240042288E-15 7.362422317460799E-15 9.017267620330242E-13 1.910607330741661E-9 -1.906256314502815E-9 2.81684425474084E-11
peri -1.933424306922044E-13 4.466908266781645E-13 6.934044596766258E-10 -1.906256314502815E-9 2.11701026723384E-9 -2.793474610077564E-11
i -9.669229965042607E-16 2.288442036610273E-15 7.340873765507417E-13 2.81684425474084E-11 -2.793474610077564E-11 1.523889473870643E-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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