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2645 Daphne Plane (1976 QD)
Classification: Main-belt Asteroid          SPK-ID: 2002645
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1050591203669507 1.1954e-08  
a 2.391688903241842 7.9006e-09 au
q 2.140420170875858 3.076e-08 au
i 13.79389686414673 3.9091e-07 deg
node 349.7359642904692 1.2493e-06 deg
peri 79.89677723049539 6.3724e-06 deg
M 283.4070499799212 8.3834e-06 deg
tp 2459487.936393998818
(2021-Sep-30.43639400)
3.2129e-05 TDB
period 1351.000344188964
3.70
6.6943e-06
1.833e-08
d
yr
n .2664692141260083 1.3204e-09 deg/d
Q 2.642957635607827 8.7307e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2484  
   data-arc span      24206 days (66.27 yr)  
   first obs. used      1954-10-06  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37232  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:04:00  

Additional Information
 Earth MOID = 1.20072 au 
 Jupiter MOID = 2.61232 au 
 T_jup = 3.485 
[ 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 12.18   n/a E2021B10  
diameter diameter 15.58 km 1.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
rotation period rot_per 8.360 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2007) Minor Planet Bull. 34, 32-37.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.0875   0.015 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3

2645 Daphne Plane (1976 QD)          Discovered 1976-Aug-30 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1976 QD = 1965 SG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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